Study sets matching "ap statistics"

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Study sets matching "ap statistics"

17 terms
AP Statistics - 1.3
mean
x-bar
Σ (sigma)
μ (mu)
arithmetic average, measure of center, NOT RESISTANT, easily…
the mean of a set of observations/sample (add their values an…
sum, add them all up
population mean
mean
arithmetic average, measure of center, NOT RESISTANT, easily…
x-bar
the mean of a set of observations/sample (add their values an…
28 terms
AP Statistics: Chapter 7
Discrete
R.V.
Random Variable
Discrete Random Variable
Countable
Random variable
A Variable whose value is a numerical outcome of a random phe…
X, is a random variable that has a countable number of possib…
Discrete
Countable
R.V.
Random variable
AP Statistics
Which term defines "Using the data to…
Which term defines "Summarizing a samp…
What kind of data is used in bar charts?
Are titles and labels necessary?
Statistical inference and analysis
Descriptive statistics
Qualitative (Categorical)
Yes
Which term defines "Using the data to…
Statistical inference and analysis
Which term defines "Summarizing a samp…
Descriptive statistics
174 terms
AP Statistics Cummulative Review
Addition Rule
Alpha (α)
Alternative Hypothesis
Association
P(A ∪ B) = P(A) + P(A) - P(A ∩ B) aids in computing the chanc…
The probability of a Type I error. See significance level.
The hypothesis stating what the researcher is seeking evidenc…
Relationship between or among variables.
Addition Rule
P(A ∪ B) = P(A) + P(A) - P(A ∩ B) aids in computing the chanc…
Alpha (α)
The probability of a Type I error. See significance level.
Ap Statistics: Semester Exam
S.O.C.S.
Shape
Outlier
Center
Shape, Outlier, Center, Spread
Skewed/symmetrical
Q1-(1.5xIQR) and Q3+(1.5xIQR)
Mean (average) and Median (Middle)
S.O.C.S.
Shape, Outlier, Center, Spread
Shape
Skewed/symmetrical
23 terms
Chapter 11 AP Statistics
Population
Sample
Sample Survey
Bias
The entire group of individuals or instances about whom we ho…
A (representative) subset of a population, examined in hope o…
A study that asks questions of a sample drawn from some popul…
Any systematic failure of a sampling method to represent its…
Population
The entire group of individuals or instances about whom we ho…
Sample
A (representative) subset of a population, examined in hope o…
29 terms
AP Statistics Chapter 1
categorical variable
quantitative variable
frequency table
relative frequency table
individual into one of several groups that describes something
numerical values that can be averaged in a way that makes sen…
a way to analyze categorical data; displays frequencies in ea…
shows percents (relative frequencies)
categorical variable
individual into one of several groups that describes something
quantitative variable
numerical values that can be averaged in a way that makes sen…
17 terms
AP Statistics Unit 4 - Probability
Probability
Law of Large Numbers
Simulation
Sample Space (S)
A number between 0 and 1 that describes the proportion of tim…
If we observe more and more repetitions of any chance process…
An imitation of chance behavior based on a chance model that…
The set of all possible outcomes of a chance process.
Probability
A number between 0 and 1 that describes the proportion of tim…
Law of Large Numbers
If we observe more and more repetitions of any chance process…
AP Statistics- Experimental Design
Individuals
Population:
Sample
Census
the objects described by a set of data. Individuals may be pe…
The entire group of individuals that we want information about
a part (subset) of the population that we actually examine in…
attempts to contact every individual in the entire population
Individuals
the objects described by a set of data. Individuals may be pe…
Population:
The entire group of individuals that we want information about
54 terms
AP Statistics Study Cards
Parameter
Statistic
Convenience Sample
Voluntary Response Sample
A calculation made from population data
A calculation made from sample data
Uses subjects that are readily available (no randomization)
Subjects choose to be part of the sample (no randomization)
Parameter
A calculation made from population data
Statistic
A calculation made from sample data
18 terms
AP Statistics: Chapter P
Individuals
Variables
Categorical Variable
Quantitative Variable
objects described by the data
characteristic of an individual
places individuals into groups
numeric measures
Individuals
objects described by the data
Variables
characteristic of an individual
28 terms
AP Statistics Term
Relative frequency of a histogram
Modes
Distribution: skewed to the right
Ogive
Represented by relative area (1)
The values with the peaks above them are the mode. (Unimodal/…
Spread far and thinly toward to the higher value (1)
cumulative relative frequency plot (1)
Relative frequency of a histogram
Represented by relative area (1)
Modes
The values with the peaks above them are the mode. (Unimodal/…
34 terms
AP Statistics Summer Assignment
Categorical Variable
Quantitative Variable
Discrete Variable
Continuous
Places an individual into one of several groups or categories…
Takes numerical values for which it makes sense to find an av…
A variable that CANNOT take on any value between its minimum…
Variables that CAN take on any value between its minimum and…
Categorical Variable
Places an individual into one of several groups or categories…
Quantitative Variable
Takes numerical values for which it makes sense to find an av…
63 terms
AP Statistics Semester 1
Simple random sample (SRS)
Stratified random sample
Systematic random sample
Random cluster sample
A sample where n individuals are selected from a population i…
A sample in which simple random samples are selected from eac…
A sample where every nth individual is selected from a list o…
Population is divided into subgroups then the entire subgroup…
Simple random sample (SRS)
A sample where n individuals are selected from a population i…
Stratified random sample
A sample in which simple random samples are selected from eac…
20 terms
AP Statistics Chapter 7
What type of graph is used to show the…
When describing a scatterplot, what fo…
What is it meant by an explanatory var…
What is it meant by a response variable?
Scatterplot
1. Direction... 2. Form... 3. How strong the relationship is... 4. The…
The independent variable on the x axis (X variable)
The variable of interest, respondent to the explanatory varia…
What type of graph is used to show the…
Scatterplot
When describing a scatterplot, what fo…
1. Direction... 2. Form... 3. How strong the relationship is... 4. The…
35 terms
AP STATISTICS
Individuals
Variable
Categorical Variable
Quantitative Variable
Individuals are the people or objects included in the study.
An element, feature, or factor that is liable to vary or chan…
A variable that can take on one of a limited, and usually fix…
Variables that are measured on a numeric or quantitative scale.
Individuals
Individuals are the people or objects included in the study.
Variable
An element, feature, or factor that is liable to vary or chan…
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
138 terms
AP Statistics
context
data
data table
case
ideally tells who was measured, what was measured, how the da…
systematically recorded information, whether numbers or label…
an arrangement of data in which each row represents a case an…
an individual about whom or which we have data
context
ideally tells who was measured, what was measured, how the da…
data
systematically recorded information, whether numbers or label…
AP Statistics
voluntary response sample
confounded
population
sample
a sample made up of volunteers; compared to a random sample,…
occurs when the experimental controls do not allow the experi…
the total set of observations that can be made
a set of observations drawn from a population
voluntary response sample
a sample made up of volunteers; compared to a random sample,…
confounded
occurs when the experimental controls do not allow the experi…
AP Statistics
Experiment vs Observational studies
Population vs Sample
Census
Voluntary Response Sample
observe individuals and measure variables, but do not attempt…
entire group of individuals we want information about
attempts to contact every individual in the entire population
individual choose themselves (ex. Radio call in show)
Experiment vs Observational studies
observe individuals and measure variables, but do not attempt…
Population vs Sample
entire group of individuals we want information about
20 terms
AP STATISTICS FORMULAS
Mean
IQR
Standard Deviation
Measures of Position
Sum of observations/Number of Observations
Q3-Q1... Resistant to outliers
Common measure of spread. How far each observation is from th…
Percentiles: Percentile tells us a data point's position rela…
Mean
Sum of observations/Number of Observations
IQR
Q3-Q1... Resistant to outliers
38 terms
AP Statistics Chapter 1 Vocab
Individuals
Variable
Categorical Variable
Quantitative Variable
Objects described by a set of data. Can be people, animals, o…
Any characteristic of an individual, which can take different…
Places an individual into one of several groups or categories.
Takes numerical values for which it makes sense to find an av…
Individuals
Objects described by a set of data. Can be people, animals, o…
Variable
Any characteristic of an individual, which can take different…
35 terms
AP Statistics Chapter 1
Population
Sample
Observational Study
Experiment
The entire collection of individuals or objects that you want…
Part of the population selected for the study.
Investigators observe subjects and measure variables of inter…
Investigators apply the treatments to experimental units (peo…
Population
The entire collection of individuals or objects that you want…
Sample
Part of the population selected for the study.
27 terms
AP Statistics Formulas
Sample Mean
Sample Standard Deviation
Pooled Standard Deviation
Least Squares Regression Line
Sample Mean
Sample Standard Deviation
AP Statistics Conditions
One Sample Z-Test (for mean)
Two Sample Z-Test (for mean)
One Sample T-Test (for mean)
Two Sample T-Test (for mean)
1. σ is known... 2. SRS... 3. normal distribution... or... n is large (>30)
1. both σs are known... 2. SRS... 3. independent samples... 4. normal…
1. σ is unknown... 2. SRS... 3. observations have a normal distribu…
1. both σs are unknown... 2. two independent SRSs... 3. populations…
One Sample Z-Test (for mean)
1. σ is known... 2. SRS... 3. normal distribution... or... n is large (>30)
Two Sample Z-Test (for mean)
1. both σs are known... 2. SRS... 3. independent samples... 4. normal…
AP Statistics - Chapter 1
Pie Chart
Bar Graph
Quantitative Data
What makes a Good Graph?
Used with categorical data and it must add up to 100%... Very r…
+ Used with Categorical Data... + Usually Shows Frequency (Coun…
Data from surveys, experiments, and observational studies
+ Title... + Axes Labeled... + Constant Scale
Pie Chart
Used with categorical data and it must add up to 100%... Very r…
Bar Graph
+ Used with Categorical Data... + Usually Shows Frequency (Coun…
12 terms
AP Statistics
What does "r" mean? What is its name?
What does r^2 mean? What is its name?
What is the equation of the least squa…
Place a value in x to produce y
There is a strong/mild/weak positive/negative linear relation…
_____% of the variability of (response variable) is due to th…
(predicted) y = a + bx where (predicted) y is the predicted (…
Solve
What does "r" mean? What is its name?
There is a strong/mild/weak positive/negative linear relation…
What does r^2 mean? What is its name?
_____% of the variability of (response variable) is due to th…
33 terms
AP Statistics Vocabulary Chapter 1
roundoff error
pie chart
stemplot
clusters
the error that occurs when the percents don't add up to 100%
This must include all the categories that make up a whole. Us…
Represents data by separating each value into two parts: the…
these form when there is a gap between the data
roundoff error
the error that occurs when the percents don't add up to 100%
pie chart
This must include all the categories that make up a whole. Us…
124 terms
AP-Statistics Vocabulary
response variable
explanatory variable
scatterplot
Interpreting Scatterplots (FODS)
outcome of the explanatory
helps explain or influence outcome of response variable
plot that shows relationship between 2 QUANTITATIVE variables
F: Form (curved/linear/etc.)... O: Outliers ... D: Direction (posit…
response variable
outcome of the explanatory
explanatory variable
helps explain or influence outcome of response variable
36 terms
AP Statistics Chapter 4
What is the population in a statistica…
What is the sample in a statistical st…
What is a convenience sample, and why…
What is a bias?
the entire group of individuals about which we want information
part of the population from which we actually collect informa…
choosing individuals who are easiest to reach results. Howeve…
design of a statistical study that systematically favors cert…
What is the population in a statistica…
the entire group of individuals about which we want information
What is the sample in a statistical st…
part of the population from which we actually collect informa…
10 terms
AP Statistics
A researcher carefully computes the co…
Given r=0.543, what is r²? After findi…
Why is linear regression sometimes ref…
Fisherman have been recording the dead…
A error was made! All correlation coefficients: −1 ≤ r ≤ 1.
0.5432 = .295 ... .295 --> 29.5%
Mathematically the coefficients are determined from computing…
What is the slope? It is m = 9.607. ... What is the meaning of…
A researcher carefully computes the co…
A error was made! All correlation coefficients: −1 ≤ r ≤ 1.
Given r=0.543, what is r²? After findi…
0.5432 = .295 ... .295 --> 29.5%
143 terms
AP Statistics Exam Terms
alternative hypothesis
association
bar graph
bimodal
the theory that the researcher hopes to confirm by rejecting…
when some of the variability in one variable can be accounted…
graph in which the frequencies of categories are displayed wi…
distribution made with two or more most common values (peaks-…
alternative hypothesis
the theory that the researcher hopes to confirm by rejecting…
association
when some of the variability in one variable can be accounted…
95 terms
AP Statistics Midterm Vocabulary
Probability
Random
Trial
Outcome
The likelihood of something occurring . The proportion of tim…
An order/pattern that may not be recognized in the short term
One observation of a random phenomenon
The value of a trial
Probability
The likelihood of something occurring . The proportion of tim…
Random
An order/pattern that may not be recognized in the short term
AP Statistics Vocabulary List
Statistical Significance
Non-Response Bias
p-Value
Null Hypothesis
When your discovered p-value is less than your alpha (.05 if…
A bias caused by a number of people who did not respond to th…
The probability of getting a result at least as extreme as th…
The hypothesis that states there is no difference between two…
Statistical Significance
When your discovered p-value is less than your alpha (.05 if…
Non-Response Bias
A bias caused by a number of people who did not respond to th…
8 terms
Chapter 5 AP Statistics
probability
sample space (S)
probability model
event
of any outcome of a chance process is a number between 0 and…
The set of all possible outcomes of a chance process.
A description of some chance behavior that consists of two pa…
Designated by a capital letter, any collection of outcomes fr…
probability
of any outcome of a chance process is a number between 0 and…
sample space (S)
The set of all possible outcomes of a chance process.
AP Statistics Chapter 1 Vocabulary
biased
parameter
blinding
average
any systematic failure of a sampling method to represent its…
a number that is used to represent a population characteristi…
not telling participants which treatment a subject is getting
Also called the mean; a number that describes the central ten…
biased
any systematic failure of a sampling method to represent its…
parameter
a number that is used to represent a population characteristi…
10 terms
Ap Statistics
D - there is no linear relationship be…
E - The observation in the lower-right…
C - the square of the correlation coef…
A - I only
A school guidance counselor examines the number of extracurri…
The British government conducts regular surveys of household…
The fraction of the variation in the values of y that is expl…
An AP® Statistics student designs an experiment to see whethe…
D - there is no linear relationship be…
A school guidance counselor examines the number of extracurri…
E - The observation in the lower-right…
The British government conducts regular surveys of household…
16 terms
AP statistics: observational studies
stratified random sampling (SRS)
stratified
cluster
systematic
every group of size n has an equal chance of being selected (…
first divide into groups (strata), then randomly select n fro…
first divide into groups (clusters), then randomly select n g…
randomly select first subject, then select every kth subject…
stratified random sampling (SRS)
every group of size n has an equal chance of being selected (…
stratified
first divide into groups (strata), then randomly select n fro…
7 terms
AP Statistics: Chapter 7: Parameter vs Statistic
Determine whether the numerical value…
Determine whether the numerical value…
Determine whether the numerical value…
Determine whether the numerical value…
STATISTIC - the value $68,000 is a numerical description of a…
STATISTIC - the value of 38% is a numerical description of a…
PARAMETER - the 62 surviving passengers out of 97 total passe…
PARAMETER - the value of 60% is a numerical description of th…
Determine whether the numerical value…
STATISTIC - the value $68,000 is a numerical description of a…
Determine whether the numerical value…
STATISTIC - the value of 38% is a numerical description of a…
111 terms
AP Statistics (FINALS 2016)
Individuals
Variable
Categorical variable
Quantitative variable
objects described by a set of data: could be people/animals/t…
characteristics of an individual. There can be different valu…
separating individuals into separate groups
describing an individual with numerical values for which arit…
Individuals
objects described by a set of data: could be people/animals/t…
Variable
characteristics of an individual. There can be different valu…
AP Statistics
Observational Study
Experiment
Explanatory Variable
Response Variable
Like experiments, observational studies attempt to understand…
An experiment is a controlled study in which the researcher a…
Two events or random variables are dependent if they are not…
Variables of interest in an experiment (those that are measur…
Observational Study
Like experiments, observational studies attempt to understand…
Experiment
An experiment is a controlled study in which the researcher a…
21 terms
AP Statistics - 1.2
dotplot
overall pattern
outlier
describing a distribution of quantitat…
individual values shown as a dot above its location on a numb…
shape, center, spread
individual value that falls outside the overall pattern
S- shape... O- outliers... C- center... S- spread
dotplot
individual values shown as a dot above its location on a numb…
overall pattern
shape, center, spread
48 terms
AP Statistics Chapter 4 Vocab
Population
Census
Sample
Sample Survey
In a statistical study, it is the entire group of individuals…
Collects data from every individual in the population.
The subset of individuals in the population from which we act…
Studies that use an organized plan to choose a sample that re…
Population
In a statistical study, it is the entire group of individuals…
Census
Collects data from every individual in the population.
AP Statistics
context
data
data table
case
ideally tells who was measured, what was measured, how the da…
systematically recorded information, whether numbers or label…
an arrangement of data in which each row represents a case an…
an individual about whom or which we have data
context
ideally tells who was measured, what was measured, how the da…
data
systematically recorded information, whether numbers or label…
22 terms
AP Statistics
Population
Sample
Bias
Randomization
The entire group of people or instances we want to study
A subset of the population to learn about and understand the…
A failure of accurately using the sample method to represent…
Each individual is given a random chance of being selected.
Population
The entire group of people or instances we want to study
Sample
A subset of the population to learn about and understand the…
9 terms
AP Statistics - 1.1
frequency table
relative frequency table
roundoff error
pie charts, bar graphs
distribution of a categorical variable, lists the categories…
distribution of a categorical variable, lists the categories…
computational error due to rounding, ex: all numbers add to 9…
display the distribution of a categorical variable
frequency table
distribution of a categorical variable, lists the categories…
relative frequency table
distribution of a categorical variable, lists the categories…
Ap statistics
Interpreting Lsrl y intercept
Interpret lsrl slope b
Interpret Isrl s
Interpret r2
When the x is zero, the y variable is predicted to be -
For every one unit change in the x variable the y variable is…
It measures the typical distance between the actual y and the…
%of the variation in y is accounted for by the Lsrl of y on x
Interpreting Lsrl y intercept
When the x is zero, the y variable is predicted to be -
Interpret lsrl slope b
For every one unit change in the x variable the y variable is…
30 terms
AP Statistics Vocab Set 1
sampling
random
factors
units
studying a part in order to gain information about the whole
table of _____ digits can be used to select samples
another name for explanatory variables in an experiment
individuals on which an experiment is done
sampling
studying a part in order to gain information about the whole
random
table of _____ digits can be used to select samples
AP Statistics Probability
Probability
Trial
Outcome
Event
A number between 0 and 1 that reports the likelihood of the e…
A single attempt
Value measured, observed, or reported for an individual insta…
A collection of outcomes
Probability
A number between 0 and 1 that reports the likelihood of the e…
Trial
A single attempt
AP Statistics Chapter 6
Probability Model
Random Variable
Probability Distribution
Discrete Random Variables
Describes the possible outcomes of a chance process and the l…
The numerical value that describes the outcomes of a chance p…
The probability model for a random variable
- Random variables that can assume a countable number (finite…
Probability Model
Describes the possible outcomes of a chance process and the l…
Random Variable
The numerical value that describes the outcomes of a chance p…
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