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Study sets matching "ap statistics chapter 3"

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Study sets matching "ap statistics chapter 3"

23 terms
AP Statistics Chapter 3 VOCAB
Response Variable
Explanatory Variable
Scatterplot
Positive Association
measures an outcome of a study
may help explain or predict changes in a response variable
shows the relationship between two quantitative variables mea…
data points that generally go upward from left to right, some…
Response Variable
measures an outcome of a study
Explanatory Variable
may help explain or predict changes in a response variable
51 terms
AP Statistics: Chapter 3
Response variable
Explanatory variable
Scatterplots
When the variables aren't dependent, t…
Measures the outcome of a study, dependent variable, y
Attempts to explain observed outcomes, indepdent variable, x
Show the relationship betweeen two quantitive variables (biva…
Independent, x
Response variable
Measures the outcome of a study, dependent variable, y
Explanatory variable
Attempts to explain observed outcomes, indepdent variable, x
15 terms
AP Statistics Chapter 3
Response Variable
Explanatory Variable
Scatterplot
Positive Association
Measures an outcome of a study
Helps explain or influences changes in a response variable
A graphed cluster of points each of which represents the valu…
Data points that generally go upward from left to right, some…
Response Variable
Measures an outcome of a study
Explanatory Variable
Helps explain or influences changes in a response variable
24 terms
AP Statistics Chapter 3
Scatterplot
Explanatory Variable
Response Variable
DOFS
Displays the relationship between 2 quantitative variables... 1…
When x helps predict y, goes on x-axis
When y is predicted by x, goes on y axis
Direction, Outliers, Form, Strength
Scatterplot
Displays the relationship between 2 quantitative variables... 1…
Explanatory Variable
When x helps predict y, goes on x-axis
24 terms
AP Statistics Chapter 3
Scatterplot
Explanatory Variable
Response Variable
DOFS
Displays the relationship between 2 quantitative variables... 1…
When x helps predict y, goes on x-axis
When y is predicted by x, goes on y axis
Direction, Outliers, Form, Strength
Scatterplot
Displays the relationship between 2 quantitative variables... 1…
Explanatory Variable
When x helps predict y, goes on x-axis
11 terms
AP Statistics Chapter 3
3 Things you should always do first wi…
Relative Frequency Table (distribution…
Distribution of a variable
Area Principle
1. Make a picture- a display to help you THINK... 2. Picture- SH…
Lists the categories in a categorical variable and the percen…
Tells us what values a variable takes and how often
Each data value should be represented by the same amount of a…
3 Things you should always do first wi…
1. Make a picture- a display to help you THINK... 2. Picture- SH…
Relative Frequency Table (distribution…
Lists the categories in a categorical variable and the percen…
17 terms
AP statistics Chapter 3
frequency distribution
Comparative bar chart
pie chart
Segmented bar chart
A table that displays frequencies and sometimes relative and…
two or more bar charts that use the same set of horizontal an…
a graph of a frequency distribution for a categorical data set.
A graph of a frequency distribution for a categorical data se…
frequency distribution
A table that displays frequencies and sometimes relative and…
Comparative bar chart
two or more bar charts that use the same set of horizontal an…
11 terms
AP Statistics Chapter 3 Vocabulary
Frequency table
Relative frequency table
Distribution
Area principle
lists the categories in a categorical variable and gives the…
A frequency table that gives percentage values of each category
gives the possible values of the variable and the relative fr…
In a statistical display, each data value should be represent…
Frequency table
lists the categories in a categorical variable and gives the…
Relative frequency table
A frequency table that gives percentage values of each category
19 terms
AP Statistics Chapter 3 Vocab
Explanatory Variable
Response Variable
Scatterplot
Direction
May help explain or predict changes in a response variable. T…
Measures an outcome of a study. The y value in a scatterplot.
Shows the relationship between two quantitative variables mea…
The movement of the overall pattern in a scatterplot. Reading…
Explanatory Variable
May help explain or predict changes in a response variable. T…
Response Variable
Measures an outcome of a study. The y value in a scatterplot.
22 terms
AP Statistics Chapter 3: Describing Relationships
Scatterplot
Explanatory Variable
Response Variable
Direction
Shows the relationship between 2 quantitative variables measu…
Help explain or influence changes in a response variable. The…
Measures an outcome of a study. The x-axis.
Positive, negative or no direction.
Scatterplot
Shows the relationship between 2 quantitative variables measu…
Explanatory Variable
Help explain or influence changes in a response variable. The…
12 terms
AP Statistics Chapter 3 Vocabulary
Reading Computer Output for Regression
Interpret r²
Outliers and Influential Points in Reg…
Interpret LSRL "s"
Using foot length (x) to predict height (y):... Y intercept = 10…
____% of the variation in y (context) is accounted for by the…
Any point that falls outside the pattern of the association s…
s = ____ is the standard deviation of the residuals.... It measu…
Reading Computer Output for Regression
Using foot length (x) to predict height (y):... Y intercept = 10…
Interpret r²
____% of the variation in y (context) is accounted for by the…
17 terms
AP Statistics Chapter 3
Scatterplot
Explanatory Variable
Response Variable
Outlier
Plot that shows the relationship between two quantitative var…
Variable that may help explain or predict changes in a respon…
Variable that measures an outcome of a study.
Individual value that falls outside the overall pattern of a…
Scatterplot
Plot that shows the relationship between two quantitative var…
Explanatory Variable
Variable that may help explain or predict changes in a respon…
26 terms
AP Statistics: Chapter 3
distribution
histogram
gap
stem-and-leaf display
slices up all the possible variable slices up all the possibl…
uses adjacent bars to show the distribution of a quantitative…
a region of the distribution where there are no values
shows quantitative data values in a way that sketches the dis…
distribution
slices up all the possible variable slices up all the possibl…
histogram
uses adjacent bars to show the distribution of a quantitative…
32 terms
AP Statistics Chapter 3
response variable
explanatory variable
how to examine data
scatterplot
measures an outcome of a study. independent variable.
attempts to explain the observed outcomes. dependent variable.
plot the data. use numerical summaries. look for overall patt…
shows the relationship between two quantitative variables mea…
response variable
measures an outcome of a study. independent variable.
explanatory variable
attempts to explain the observed outcomes. dependent variable.
33 terms
AP Statistics: Chapter 3
Response variable
Explanatory variable
Scatterplots
Positive association
Measures the outcome of a study, dependent variable, y
Attempts to explain observed outcomes, indepdent variable, x
Show the relationship betweeen two quantitive variables (biva…
As x increases, y increases
Response variable
Measures the outcome of a study, dependent variable, y
Explanatory variable
Attempts to explain observed outcomes, indepdent variable, x
26 terms
AP Statistics: Chapter 3
distribution
histogram
gap
stem-and-leaf display
(of a quantitative variable) slices up all the possible varia…
uses adjacent bars to show the distribution of a quantitative…
a region of the distribution where there are no values
shows quantitative data values in a way that sketches the dis…
distribution
(of a quantitative variable) slices up all the possible varia…
histogram
uses adjacent bars to show the distribution of a quantitative…
16 terms
AP Statistics: Chapter 3
Response variable
Explanatory variable
Scatterplot
Positive association
Measures the outcome of a study, dependent variable
May help explain or predict changes in a response variable, i…
Shows the relationship between two quantitive variables measu…
Two variables have a __________ when above average values of…
Response variable
Measures the outcome of a study, dependent variable
Explanatory variable
May help explain or predict changes in a response variable, i…
26 terms
AP Statistics Chapter 3
Strength, Direction, Form (Context), a…
when there is an experiment testing th…
extrapolate beyond your data
| 0.7 to 1.0 |
What should you include when describing a scatterplot?
When is the only time you can assume causation?
What is dangerous to do?
When is a correlation strong?
Strength, Direction, Form (Context), a…
What should you include when describing a scatterplot?
when there is an experiment testing th…
When is the only time you can assume causation?
51 terms
AP Statistics: Chapter 3
Response variable
Explanatory variable
Scatterplots
When the variables aren't dependent, t…
Measures the outcome of a study, dependent variable, y
Attempts to explain observed outcomes, indepdent variable, x
Show the relationship betweeen two quantitive variables (biva…
Independent, x
Response variable
Measures the outcome of a study, dependent variable, y
Explanatory variable
Attempts to explain observed outcomes, indepdent variable, x
9 terms
AP Statistics: Chapter 3
Frequency Table
Distribution
Area Principal
Bar Graph
List by categories and provides percents or numbers
The values that are presented
Data value should be presented with the same amount of data.
Organizes categorical data
Frequency Table
List by categories and provides percents or numbers
Distribution
The values that are presented
12 terms
AP Statistics Chapter 3
Response Variable
Explanatory Variable
DOFS
Correlation
Measures the outcome of a study. Y
May help explain/predict changes in a response variable. X
Direction, Outliers, Form, Strength
r
Response Variable
Measures the outcome of a study. Y
Explanatory Variable
May help explain/predict changes in a response variable. X
AP Statistics Chapter 3
Association ... (strong,moderate,weak)
Response variable
Explanatory variable
Direction
Represent the pattern of data
Dependant variable
Independant variable
-positvly associated... Negation association
Association ... (strong,moderate,weak)
Represent the pattern of data
Response variable
Dependant variable
19 terms
AP Statistics Chapter 3
Explanatory Variable
Response Variable
Scatterplot
Positive Association
Attempts to explain the observed outcome
Outcomes of study
Graphical Representation to display the relation between two…
Positive slope direction
Explanatory Variable
Attempts to explain the observed outcome
Response Variable
Outcomes of study
19 terms
AP Statistics Chapter 3
Explanatory Variable
Response Variable
Scatterplot
Positive Association
Attempts to explain the observed outcomes.
Outcomes of study.
Graphical representation to display the relation between two…
Positive slop direction.
Explanatory Variable
Attempts to explain the observed outcomes.
Response Variable
Outcomes of study.
30 terms
AP Statistics - Chapter 3
response variables
explanatory variable
scatterplot
what axis does the eXplanatory variabl…
measures an outcome of a study. Also called Independent Varia…
helps explain or influence changes in a response variable.…
shows the relationship between two quantitative variables mea…
the eXplanatory variable is always drawn on the horizontal X-…
response variables
measures an outcome of a study. Also called Independent Varia…
explanatory variable
helps explain or influence changes in a response variable.…
23 terms
AP Statistics TPS5e Chapter 3 - describing relationships
Explanatory variable
Response variable
Scatterplot
Interpreting Scatterplots
Independent variable that may help explain or predict changes…
Dependent variable that measures an outcome of a study
Graph that shows relationships between 2 quantitative variabl…
DUFS- Direction, (Unusual features, if any), Form, and Strength
Explanatory variable
Independent variable that may help explain or predict changes…
Response variable
Dependent variable that measures an outcome of a study
32 terms
AP Statistics Chapter 3
response variable
explanatory variable
how to examine data
scatterplot
measures an outcome of a study. independent variable.
attempts to explain the observed outcomes. dependent variable.
plot the data. use numerical summaries. look for overall patt…
shows the relationship between two quantitative variables mea…
response variable
measures an outcome of a study. independent variable.
explanatory variable
attempts to explain the observed outcomes. dependent variable.
12 terms
Chapter 3 AP Statistics
scatter plot
Form, Direction, Strength
Correlation Coefficient
equation for r
shows relationship between 2 variables measured on the same i…
Form (cluster of points, groups, outliers, gaps) Direction (p…
measures direction and strength of relationship, always a num…
r=(1/n) E (x-mean of x/std dev of x) (y-mean of y/std dev of y)
scatter plot
shows relationship between 2 variables measured on the same i…
Form, Direction, Strength
Form (cluster of points, groups, outliers, gaps) Direction (p…
15 terms
AP Statistics Chapter 3
describing relationships
describing scatterplots
correlation coefficient
rules of thumb for r-values
examining the relationships between two quantitative variable…
form: linear/non-linear (curved) ... strength: weak/moderate/st…
negative association = -r... positive association = +r
strong correlation: 0.8 ≤ r ≤ 1, -1 ≤ r ≤ -0.8... moderate corr…
describing relationships
examining the relationships between two quantitative variable…
describing scatterplots
form: linear/non-linear (curved) ... strength: weak/moderate/st…
15 terms
AP Statistics Chapter 3 Vocab
Measures of Center
Measures of Spread
Sample Mean
Population Mean
Where the data distribution is located along the number line,…
How much variability there is in a data distribution, provide…
arithmetic average of values in sample (x-bar) x= sum of all…
Denoted by μ, arithmetic average of all x values in an entire…
Measures of Center
Where the data distribution is located along the number line,…
Measures of Spread
How much variability there is in a data distribution, provide…
23 terms
AP Statistics Chapter 3 VOCAB
Response Variable
Explanatory Variable
Scatterplot
Positive Association
measures an outcome of a study
may help explain or predict changes in a response variable
shows the relationship between two quantitative variables mea…
data points that generally go upward from left to right, some…
Response Variable
measures an outcome of a study
Explanatory Variable
may help explain or predict changes in a response variable
12 terms
AP Statistics Chapter 3 Flashcards
Frequency distribution
Comparative bar chart
Pie chart
Segmented bar chart
A table that displays frequencies and sometimes relative and…
Two or more bar carts that use the same set of horizontal and…
A graph of a frequency distribution for a categorical data se…
A graph of a frequency distribution for a categorical data se…
Frequency distribution
A table that displays frequencies and sometimes relative and…
Comparative bar chart
Two or more bar carts that use the same set of horizontal and…
22 terms
AP Statistics Chapter 3 Vocabulary
Segmented bar chart
Stem
Leaf
Class intervals
The use of a rectangular bar rather than a circle to represen…
The numbers in the vertical column on the left of a stem-and-…
The numbers to the right of the vertical line on a stem-and-l…
Intervals used to classify continuous numerical data
Segmented bar chart
The use of a rectangular bar rather than a circle to represen…
Stem
The numbers in the vertical column on the left of a stem-and-…
23 terms
AP Statistics Chapter 3 Vocabulary
Response Variable
Explanatory Variable
Scatterplot
Direction
Measures the outcome of a study
Helps explain/predict changes in a response variable
Shows the relationship between two quantitative variables mea…
If the relationship has a clear direction, we speak of either…
Response Variable
Measures the outcome of a study
Explanatory Variable
Helps explain/predict changes in a response variable
21 terms
AP Statistics Chapter 3 Vocabulary
scatterplot
explanatory variable
response variable
direction
displays the relationship between two quantitative variables…
the x value (independent variable)
the y value (dependent variable)
if the direction has a clear direction, we speak od either po…
scatterplot
displays the relationship between two quantitative variables…
explanatory variable
the x value (independent variable)
14 terms
AP Statistics-Chapter 3
Histogram
Stem&Leaf Displays
Shape
Mode
a graph using adjacent bars to show the distribution of value…
shows the quantitative data values in a way that sketches the…
to describe the shape of the distribution; single v multiple…
used when describing the distribution of data for a histogram
Histogram
a graph using adjacent bars to show the distribution of value…
Stem&Leaf Displays
shows the quantitative data values in a way that sketches the…
18 terms
AP Statistics Chapter 3 Vocabulary
Response Variable
Explanatory Variable
Scatterplot
Overall Pattern (strength, form, direc…
measures an outcome of a study
may help explain or influence changes in a response variable
shows relationship between two quantitative variables measure…
strength: how closely points follow a clear form, form: shape…
Response Variable
measures an outcome of a study
Explanatory Variable
may help explain or influence changes in a response variable
32 terms
AP Statistics Chapter 3
response variable
explanatory variable
how to examine data
scatterplot
measures an outcome of a study. independent variable.
attempts to explain the observed outcomes. dependent variable.
plot the data. use numerical summaries. look for overall patt…
shows the relationship between two quantitative variables mea…
response variable
measures an outcome of a study. independent variable.
explanatory variable
attempts to explain the observed outcomes. dependent variable.
21 terms
Chapter 3 Ap Statistics
response variable
explanatory variable
describing scatterplot
direction
measure an outcome of the study
helps explain or predict changes in a response variable... plot…
look for patterns, departures, direction, form and strength
where the pattern moves from and to where
response variable
measure an outcome of the study
explanatory variable
helps explain or predict changes in a response variable... plot…
15 terms
AP Statistics Chapter 3
Explanatory Variable
Response Variable
Direction
Form
Helps explain or influence changes in a response variable (IV)
Measures an outcome of study
Wether the relationsip between y and x is positive, negative,…
The shape of the association (linear, power, exponential, qua…
Explanatory Variable
Helps explain or influence changes in a response variable (IV)
Response Variable
Measures an outcome of study
48 terms
AP Statistics: Chapter 3
explanatory variable
response variable
scatterplot
direction
the independent variable, goes on the x-axis
the dependent variable, goes on the y-axis
shows the relationship between 2 quantitative variables measu…
where the overall pattern of the graph moves, positive or neg…
explanatory variable
the independent variable, goes on the x-axis
response variable
the dependent variable, goes on the y-axis
32 terms
AP Statistics Chapter 3
response variable
explanatory variable
how to examine data
scatterplot
measures an outcome of a study. independent variable.
attempts to explain the observed outcomes. dependent variable.
plot the data. use numerical summaries. look for overall patt…
shows the relationship between two quantitative variables mea…
response variable
measures an outcome of a study. independent variable.
explanatory variable
attempts to explain the observed outcomes. dependent variable.
16 terms
AP Statistics Chapter 3
Explanatory Variable
Response Variable
Correlation
Lurking Variable
May help explain or influence changes in a response variable…
Measures an outcome of a study (dependent variable).
Numerical method to measure a relationship. It measures the d…
A variable that is not the explanatory or the response but ma…
Explanatory Variable
May help explain or influence changes in a response variable…
Response Variable
Measures an outcome of a study (dependent variable).
AP STATISTICS CHAPTER 3
R
R^2
1st trait of r and r^2
2nd trait of r and r^2
Correlation coefficient... Tells us strength and direction of li…
Coefficient of determination... Tells us the percent of the vari…
Not resistant to outliers
No units
R
Correlation coefficient... Tells us strength and direction of li…
R^2
Coefficient of determination... Tells us the percent of the vari…
17 terms
Chapter 3 AP Statistics
Response Variable
Explanatory Variable
Scatterplot
Positive Association
measures outcome of a study
may help explain or influence changes in a response variable
shows the relationship between two quantitative variables mea…
when above-average values of one tend to accompany above-aver…
Response Variable
measures outcome of a study
Explanatory Variable
may help explain or influence changes in a response variable
20 terms
AP Statistics: Chapter 3
Response variable
Explanatory variable
Scatterplots
FDSO
Measures the outcome of a study, dependent variable, y
Attempts to explain observed outcomes, indepdent variable, x
Show the relationship betweeen two quantitive variables (biva…
guide to looking at scatterplot; form, direction, strength, o…
Response variable
Measures the outcome of a study, dependent variable, y
Explanatory variable
Attempts to explain observed outcomes, indepdent variable, x
20 terms
AP Statistics Chapter 3
Coefficient of determination r^2
Correlation
Equation of the least-squares regressi…
Explanatory variable
The fraction of the variation in the values of y that is acco…
Measures the direction and strength of the linear relationshi…
y hat = a +bx with slope b= r(s(y)/s(x)) and y intercept a= y…
A variable that may help explain or influences changes in a r…
Coefficient of determination r^2
The fraction of the variation in the values of y that is acco…
Correlation
Measures the direction and strength of the linear relationshi…
16 terms
AP Statistics Chapter 3
Coefficient of determination r2
Correlation
Equation of the least-squares regressi…
Explanatory variable
The fraction of the variation in the values of y that is... acco…
Measures the direction and strength of the linear relationshi…
y a bx ˆ = + with slope... sy b r... sx... = and y... intercept a y bx =…
A variable that may help explain or influences changes in a... r…
Coefficient of determination r2
The fraction of the variation in the values of y that is... acco…
Correlation
Measures the direction and strength of the linear relationshi…
11 terms
AP Statistics Chapter 3
r
Linear Regression
LSRL
r^2
Pearson Correlation Coefficient, measures the strength and di…
A line that describes how a response variable y changes with…
Least Squares Regression Line, a model for a linear trend tha…
Coefficient of Determination: the proportion of variability i…
r
Pearson Correlation Coefficient, measures the strength and di…
Linear Regression
A line that describes how a response variable y changes with…
9 terms
AP Statistics Chapter 3
r
r-squared
residual
least-squares regression
Measure of linear correlation.... -1 </= r </= 1... r > 0 Positiv…
The % of the variation in y explained by your regression mode…
y-i - y-hati = epsilon-hati
...
r
Measure of linear correlation.... -1 </= r </= 1... r > 0 Positiv…
r-squared
The % of the variation in y explained by your regression mode…
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