#### Study sets matching "ap statistics"

#### Study sets matching "ap statistics"

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

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…

Statistical Significance

Non-Response Bias

P-Value

Empirical Rule

An observed effect too large to attribute plausibly to chance.

Bias introduced to a sample when a large fraction of those sam…

found by substituting the x-value in the regression equation;…

A statistical rule stating that for a normal distribution, alm…

Statistical Significance

An observed effect too large to attribute plausibly to chance.

Non-Response Bias

Bias introduced to a sample when a large fraction of those sam…

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…

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…

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…

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…

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)

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…

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

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

Statistical Significance

Non-Response Bias

P-Value

Empirical Rule

An observed effect too large to attribute plausibly to chance.

Bias introduced to a sample when a large fraction of those sam…

found by substituting the x-value in the regression equation;…

A statistical rule stating that for a normal distribution, alm…

Statistical Significance

An observed effect too large to attribute plausibly to chance.

Non-Response Bias

Bias introduced to a sample when a large fraction of those sam…

Statistical Significance

Non-Response Bias

P-Value

Empirical Rule

An observed effect too large to attribute plausibly to chance.

Bias introduced to a sample when a large fraction of those sam…

found by substituting the x-value in the regression equation;…

A statistical rule stating that for a normal distribution, alm…

Statistical Significance

An observed effect too large to attribute plausibly to chance.

Non-Response Bias

Bias introduced to a sample when a large fraction of those sam…

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…

Type I Error

Type II Error

z-distribution

normal

Type 1 Error (level of significance-alpha):... FALSE POSITIVE: In…

Type 2 Error (Statistical power-beta): ... FALSE NEGATIVE: Failur…

The standard normal distribution (z distribution) is a normal…

a bell-shaped curve, describing the spread of a characteristic…

Type I Error

Type 1 Error (level of significance-alpha):... FALSE POSITIVE: In…

Type II Error

Type 2 Error (Statistical power-beta): ... FALSE NEGATIVE: Failur…

point estimator

point estimate

C% confidence interval

margin of error

a statistic that provides an estimate of a population parameter

the value of a statistic from a sample

gives an interval of plausible values for a parameter... point es…

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

Alpha

Alternative Hypothesis

Back to Back Stemplots

Bar Chart

the probability of a Type I Error

the hypothesis that sample observations are influenced by some…

a graphic option for comparing data from two populations

graph in which the frequencies of categorial data are displaye…

Alpha

the probability of a Type I Error

Alternative Hypothesis

the hypothesis that sample observations are influenced by some…

Response Variable

Explanatory Variable

Scatterplot

Positive Association

Measures an outcome of a study

Helps explain or influences changes in a response variable

A graphed cluster of points each of which represents the value…

Data points that generally go upward from left to right, somew…

Response Variable

Measures an outcome of a study

Explanatory Variable

Helps explain or influences changes in a response variable

Random

Independent

Sample Space

With replacement the denominator is...

Individual outcomes are uncertain, however there is a regular…

The outcome of one trial does not influence/effect the outcome…

The set of all possible outcomes. Can be presented as a list o…

Constant

Random

Individual outcomes are uncertain, however there is a regular…

Independent

The outcome of one trial does not influence/effect the outcome…

Population

Sample

Observational Study

Experiment

The entire collection of individuals or objects that you want…

Part of the population selected for the study.

Investigators observe subjects and measure variables of intere…

Investigators apply the treatments to experimental units (peop…

Population

The entire collection of individuals or objects that you want…

Sample

Part of the population selected for the study.