# Study sets matching "ap statistics vocabulary"

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…

Significance Test

Null Hypothessis

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 Hypothessis

Claim we weigh evidence against in a significance test

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

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…

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)

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…

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

Individuals

Variable

Categorical Variable

Quantitative Variable

the objects described by a set of data. Individuals may be peo…

any characteristic of an individual. A variable can take diffe…

places an individual into one of several groups or categories.

take numerical values for which it makes sense to find an aver…

Individuals

the objects described by a set of data. Individuals may be peo…

Variable

any characteristic of an individual. A variable can take diffe…

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…

Interpret Standard Deviation

Outlier Rule

Linear Transformations

Describe the Distributions OR Compare t…

Standard deviation measures spread by giving the "typical" or…

SOCS!... Shape, Outlier, Center, Spread... Only discuss outlires if…

Interpret Standard Deviation

Standard deviation measures spread by giving the "typical" or…

Outlier Rule

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.

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

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

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…