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…
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
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…
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
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…
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
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…
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
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.
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…
standard error
one-sample z interval for a population…
sampling variability (and NOTHING else!)
use phat = .5 (creates largest MoE)
When a standard deviation of a statistic is estimated from dat…
What should you include in step three for labeling (in proport…
What sources of error are taken into account for the margin of…
What should you do when calculating the Margin of Error for a…
standard error
When a standard deviation of a statistic is estimated from dat…
one-sample z interval for a population…
What should you include in step three for labeling (in proport…
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…
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
context
data
data table
variable
ideally tells who was measured, what was measured, how the dat…
systematically recorded information, whether numbers or labels…
an arrangement of data in which each row represents a case and…
holds information about the same characteristic for many cases
context
ideally tells who was measured, what was measured, how the dat…
data
systematically recorded information, whether numbers or labels…
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…
observational study
experiment
experimental unit
factor
observe outcomes without imposing treatment
actively impose some treatment in order to observe the response
the single individual to which the different treatments are as…
the explanatory variable (what is being tested)
observational study
observe outcomes without imposing treatment
experiment
actively impose some treatment in order to observe the response
Pie Chart
Outliers
Bar Chart
Segmented Bar Chart
Qualitative data display that shows how a "whole" divides into…
Individual observation(s) that falls outside the overall patte…
Qualitative display showing the frequency or relative frequenc…
Qualitative display where sub-categories are represented by a…
Pie Chart
Qualitative data display that shows how a "whole" divides into…
Outliers
Individual observation(s) that falls outside the overall patte…
Observational Study
Survey
Experiment
Factors
Investigator observes characteristics of a subset an existing…
Interviewer seeks information from a respondent by engaging in…
Investigator observes how a response variable behaves when oth…
Another name for the variables that researchers manipulate to…
Observational Study
Investigator observes characteristics of a subset an existing…
Survey
Interviewer seeks information from a respondent by engaging in…