# Study sets matching "ap statistics"

Study sets

Diagrams

Classes

Users

Determine whether the numerical value i…

Determine whether the numerical value i…

Determine whether the numerical value i…

Determine whether the numerical value i…

STATISTIC - the value $68,000 is a numerical description of a…

STATISTIC - the value of 38% is a numerical description of a S…

PARAMETER - the 62 surviving passengers out of 97 total passen…

PARAMETER - the value of 60% is a numerical description of the…

Determine whether the numerical value i…

STATISTIC - the value $68,000 is a numerical description of a…

Determine whether the numerical value i…

STATISTIC - the value of 38% is a numerical description of a S…

Bias

Block

Census

Cluster sample

The design of a statistical study shows bias if it would consi…

A group of experimental units that are known before the experi…

A study that attempts to collect data from every individual in…

To take a cluster sample, first divide the population into sma…

Bias

The design of a statistical study shows bias if it would consi…

Block

A group of experimental units that are known before the experi…

pth percentile

cumulative relative frequency graph

z-score

Effect of Adding (or Subtracting) a Con…

the value with p percent of the observations less than it

for quantitative data, displays the cumulative relative freque…

tells us how many standard deviations from the mean an observa…

adds c to (or subtracts c from) measures of center and locatio…

pth percentile

the value with p percent of the observations less than it

cumulative relative frequency graph

for quantitative data, displays the cumulative relative freque…

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

Individuals

Population:

Sample

Census

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

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 peo…

Population:

The entire group of individuals that we want information about

random variable

discrete random variable

continuous random variable

the mean of a discrete random variable

takes numerical values that describe the outcomes of some chan…

describes a fixed set of possible values, and these outcome pr…

it can take an infinite number of values, meaning it could be…

multiply each possible value by its probability, then add all…

random variable

takes numerical values that describe the outcomes of some chan…

discrete random variable

describes a fixed set of possible values, and these outcome pr…

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?

find IQR; anything above Q3+1.5(IQR) or below Q1-1.5(IQR) is a…

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?

find IQR; anything above Q3+1.5(IQR) or below Q1-1.5(IQR) is a…

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…

complementary events

P(at least 1)

mutually exclusive events (disjoint eve…

A ∩ B

two disjoint events that together make up the entire sample sp…

1- P(none)

events that can't happen at the same time

A intersect B

complementary events

two disjoint events that together make up the entire sample sp…

P(at least 1)

1- P(none)

convenient sampling bias

nonresponse bias

response bias

untruthful answers

samples where people respond voluntarily (might not be a good…

people who refuse to be contacted or are difficult to reach te…

responses from subject based on behavior of interviewer and ph…

if people do not want to seem ignorant they may just answer th…

convenient sampling bias

samples where people respond voluntarily (might not be a good…

nonresponse bias

people who refuse to be contacted or are difficult to reach te…

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…

point estimator

point estimate

general form of a confidence interval

margin of error

a statistic that provides an estimate of a population parameter

the value of a statistic from a sample

point estimate +/- margin of error OR... statistic +/- (critical…

shows how close we believe our guess is, based on the variabil…

point estimator

a statistic that provides an estimate of a population parameter

point estimate

the value of a statistic from a sample

Alternative Hypothesis (Ha)

Null hypothesis (H0)

One-sided alternative hypothesis

Power

The claim about the population that we are trying to find evid…

A statement of "no difference."

States that a parameter is larger than the null hypothesis val…

The probability that the test will reject the null when the sp…

Alternative Hypothesis (Ha)

The claim about the population that we are trying to find evid…

Null hypothesis (H0)

A statement of "no difference."

Observational study

Retrospective study

Prospective study

experiment

a study based on data in which no manipulation of factor has b…

an observational study in which subjects are selected and then…

an observational study in which subjects are followed to obser…

manipulates factor levels to create treatments, randomly assig…

Observational study

a study based on data in which no manipulation of factor has b…

Retrospective study

an observational study in which subjects are selected and then…

What is a population?

What is a census?

What is a sample?

What is a sample survey?

The population in a statistical study is the entire group of i…

A census collects data from every individual in the population.

A sample is a subset of individuals in the population from whi…

A sample survey is a study that uses an organized plan to choo…

What is a population?

The population in a statistical study is the entire group of i…

What is a census?

A census collects data from every individual in the population.

Completely Randomized Design

Block Design (Randomized Block Design)

Matched Pairs Design

Observational Study

Treatments are assigned to experimental units entirely by chan…

Experimental units are first grouped by a similar characterist…

Special type of block design where two experimental units are…

Where we collect data from individuals and measure variables o…

Completely Randomized Design

Treatments are assigned to experimental units entirely by chan…

Block Design (Randomized Block Design)

Experimental units are first grouped by a similar characterist…

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…

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…

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

Individuals

Population:

Sample

Census

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

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 peo…

Population:

The entire group of individuals that we want information about

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…

population

census

sample

convenience sample

the entire grorp of individuals we want information about

collects data from every individual in the pupulation

subset of individuals in the population from which we actually…

choosing individuals from the population that are easy to reach

population

the entire grorp of individuals we want information about

census

collects data from every individual in the pupulation