# Study sets matching "ap statistics set"

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

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…

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…

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…

categorical data

continuous data

data

data collection

Data are categorical if they are in the form of names or label…

Measured data that can be whole numbers, fractions, or decimal…

The plural form of the word datum. A collection of pieces of i…

Gathering information for selected population members through…

categorical data

Data are categorical if they are in the form of names or label…

continuous data

Measured data that can be whole numbers, fractions, or decimal…

context

data

data table

case

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…

an individual about whom or which we have data

context

ideally tells who was measured, what was measured, how the dat…

data

systematically recorded information, whether numbers or labels…

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

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

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.

Symmetric

Parameter

Statistic

Median

data on which both sides are fairly the same shape and size. "…

value of a population (typically unknown)

a calculated value about a population from a sample(s).

the middle point of the data (50th percentile) when the data i…

Symmetric

data on which both sides are fairly the same shape and size. "…

Parameter

value of a population (typically unknown)

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…

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

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…

Individuals

Variable

Categorical Variable

Quantitative Variables

The objects described by a set of data. Can be people, animals…

Any characteristic of an individual.

Type of variable that places an individual into one of several…

Type of variable that takes numerical values for which it make…

Individuals

The objects described by a set of data. Can be people, animals…

Variable

Any characteristic of an individual.

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…

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

Test of Hypothesis

Null Hypothesis

Alternate Hypothesis

Type I Error

A decision procedure for evaluating the validity of a null hyp…

The hypothesis of no difference, no change, and no association…

The statement you will adopt in the situation in which the evi…

Rejecting a null hypothesis when it is in fact true; often res…

Test of Hypothesis

A decision procedure for evaluating the validity of a null hyp…

Null Hypothesis

The hypothesis of no difference, no change, and no association…

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