Study sets matching "ap statistics moore"
Study sets
Diagrams
Classes
Users
5 number summary
z score
standard deviation
population
The minumum value, lower quartile, median, upper quartile, and…
a measure of how many standard deviations you are away from th…
A statistical measure of how far away each value is, on averag…
(statistics) the entire aggregation of items from which sample…
5 number summary
The minumum value, lower quartile, median, upper quartile, and…
z score
a measure of how many standard deviations you are away from th…
How do you check if there is outliers?
If a graph is skewed, should we calcula…
If a graph is roughly symmetrical, shou…
What is in the five number summary?
calculate IQR; anything above Q3+1.5(IQR) or below Q1-1.5(IQR)…
median; it is resistant to skews and outliers
mean; generally is more accurate if the data has no outliers
Minimum, Q1, Median, Q3, Maximum
How do you check if there is outliers?
calculate IQR; anything above Q3+1.5(IQR) or below Q1-1.5(IQR)…
If a graph is skewed, should we calcula…
median; it is resistant to skews and outliers
5 number summary
z score
standard deviation
population
The minumum value, lower quartile, median, upper quartile, and…
a measure of how many standard deviations you are away from th…
A statistical measure of how far away each value is, on averag…
(statistics) the entire aggregation of items from which sample…
5 number summary
The minumum value, lower quartile, median, upper quartile, and…
z score
a measure of how many standard deviations you are away from th…
How do you check if there is outliers?
If a graph is skewed, should we calcula…
If a graph is roughly symmetrical, shou…
What is in the five number summary?
calculate IQR; anything above Q3+1.5(IQR) or below Q1-1.5(IQR)…
median; it is resistant to skews and outliers
mean; generally is more accurate if the data has no outliers
Minimum, Q1, Median, Q3, Maximum
How do you check if there is outliers?
calculate IQR; anything above Q3+1.5(IQR) or below Q1-1.5(IQR)…
If a graph is skewed, should we calcula…
median; it is resistant to skews and outliers
Significance Test
Null Hypothesis
Alternative Hypthesis
One-Sided
A formal procedure for using observed data to decide between t…
Claim we weigh evidence against in a significance test
The claim that we are trying to find evidence for in a signifi…
It states that a parameter is larger than the null hypothesis…
Significance Test
A formal procedure for using observed data to decide between t…
Null Hypothesis
Claim we weigh evidence against in a significance test
How do you check if there is outliers?
If a graph is skewed, should we calcula…
If a graph is roughly symmetrical, shou…
What is in the five number summary?
calculate IQR; anything above Q3+1.5(IQR) or below Q1-1.5(IQR)…
median; it is resistant to skews and outliers
mean; generally is more accurate if the data has no outliers
Minimum, Q1, Median, Q3, Maximum
How do you check if there is outliers?
calculate IQR; anything above Q3+1.5(IQR) or below Q1-1.5(IQR)…
If a graph is skewed, should we calcula…
median; it is resistant to skews and outliers
5 number summary
z score
standard deviation
population
The minumum value, lower quartile, median, upper quartile, and…
a measure of how many standard deviations you are away from th…
A statistical measure of how far away each value is, on averag…
(statistics) the entire aggregation of items from which sample…
5 number summary
The minumum value, lower quartile, median, upper quartile, and…
z score
a measure of how many standard deviations you are away from th…
Conditions for Bernoulli Trials
Geometric probability model
Mean & Standard Deviation of Geometic m…
Binomial probability model
1. There are two possible outcomes (success and failure).... 2. t…
- Tells us the probability for a random variable that counts t…
Mean = 1/p... SD = sqrt(q)/p
- Tells us the probabilty for a random variable that counts th…
Conditions for Bernoulli Trials
1. There are two possible outcomes (success and failure).... 2. t…
Geometric probability model
- Tells us the probability for a random variable that counts t…
Bias
Census
Cluster sample
Convenience sample
The design of a statistical study shows bias if it would consi…
A study that attempts to collect data from every individual in…
To take a cluster sample, first divide the population into sma…
A sample selected by taking the members of the population that…
Bias
The design of a statistical study shows bias if it would consi…
Census
A study that attempts to collect data from every individual in…
parameter
statistic
sampling variability
sampling distribution
a number that describes some characteristics of the population
a number that describes some characteristic of a sample
value of a statistic varies in repeated random sampling
the distribution of values taken by the statistic in all possi…
parameter
a number that describes some characteristics of the population
statistic
a number that describes some characteristic of a sample
Bias
Census
Cluster sample
Convenience sample
The design of a statistical study shows bias if it would consi…
A study that attempts to collect data from every individual in…
To take a cluster sample, first divide the population into sma…
A sample selected by taking the members of the population that…
Bias
The design of a statistical study shows bias if it would consi…
Census
A study that attempts to collect data from every individual in…
How do you check if there is outliers?
If a graph is skewed, should we calcula…
If a graph is roughly symmetrical, shou…
What is in the five number summary?
calculate IQR; anything above Q3+1.5(IQR) or below Q1-1.5(IQR)…
median; it is resistant to skews and outliers
mean; generally is more accurate if the data has no outliers
Minimum, Q1, Median, Q3, Maximum
How do you check if there is outliers?
calculate IQR; anything above Q3+1.5(IQR) or below Q1-1.5(IQR)…
If a graph is skewed, should we calcula…
median; it is resistant to skews and outliers
Percentile
Frequency Graph
Relative Frequency Graph
Cumulative Relative Frequency Graph
The pth percentile of a distribution is the value with p perce…
A graph showing the counts of each class in a distribution.
A graph showing the percent values of each class from the whol…
The cumulative relative frequency of successive class is the r…
Percentile
The pth percentile of a distribution is the value with p perce…
Frequency Graph
A graph showing the counts of each class in a distribution.
Categorical vs. Quantitative Data
Marginal vs. Conditional Distributions
SOCS
Comparing... Distributions
Data are categorical if they fall into groups or... categories a…
In a two-way table, marginal distributions consider... only one…
Shape - Skewed Left, Skewed Right, Symmetric,... Uniform, Unimod…
Address: Shape, Outliers, Center, Spread... in context!... YOU MUS…
Categorical vs. Quantitative Data
Data are categorical if they fall into groups or... categories a…
Marginal vs. Conditional Distributions
In a two-way table, marginal distributions consider... only one…
How do you check if there is outliers?
If a graph is skewed, should we calcula…
If a graph is roughly symmetrical, shou…
What is in the five number summary?
calculate IQR; anything above Q3+1.5(IQR) or below Q1-1.5(IQR)…
median; it is resistant to skews and outliers
mean; generally is more accurate if the data has no outliers
Minimum, Q1, Median, Q3, Maximum
How do you check if there is outliers?
calculate IQR; anything above Q3+1.5(IQR) or below Q1-1.5(IQR)…
If a graph is skewed, should we calcula…
median; it is resistant to skews and outliers
Bias
Census
Cluster sample
Convenience sample
The design of a statistical study shows bias if it would consi…
A study that attempts to collect data from every individual in…
To take this sample, first divide the population into smaller…
A sample selected by taking the members of the population that…
Bias
The design of a statistical study shows bias if it would consi…
Census
A study that attempts to collect data from every individual in…
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 the…
Percentiles: Percentile tells us a data point's position relat…
Mean
Sum of observations/Number of Observations
IQR
Q3-Q1... Resistant to outliers
Variables
Categorical Variable
Quantitative Variable
Frequency Table
Characteristic of an individual
Places individual into a category
Takes numerical values for which it makes sense to find an ave…
Table of counts
Variables
Characteristic of an individual
Categorical Variable
Places individual into a category
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 (bivar…
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
5 number summary
z score
standard deviation
population
The minumum value, lower quartile, median, upper quartile, and…
a measure of how many standard deviations you are away from th…
A statistical measure of how far away each value is, on averag…
(statistics) the entire aggregation of items from which sample…
5 number summary
The minumum value, lower quartile, median, upper quartile, and…
z score
a measure of how many standard deviations you are away from th…
Variables
Categorical Variable
Quantitative Variable
Frequency Table
Characteristic of an individual
Places individual into a category
Takes numerical values for which it makes sense to find an ave…
Table of counts
Variables
Characteristic of an individual
Categorical Variable
Places individual into a category
5 number summary
z score
standard deviation
Parameter
Min, Q1, Med, Q3, Max... 25% of data between each number... The f…
std dev from mean... -Number of standard deviations a score is…
A statistical measure of how far away each value is, on averag…
From the whole population- usually unknown... We use statistics…
5 number summary
Min, Q1, Med, Q3, Max... 25% of data between each number... The f…
z score
std dev from mean... -Number of standard deviations a score is…
5 number summary
z score
standard deviation
population
The minumum value, lower quartile, median, upper quartile, and…
a measure of how many standard deviations you are away from th…
A statistical measure of how far away each value is, on averag…
(statistics) the entire aggregation of items from which sample…
5 number summary
The minumum value, lower quartile, median, upper quartile, and…
z score
a measure of how many standard deviations you are away from th…