#### 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, an…

a measure of how many standard deviations you are away from t…

A statistical measure of how far away each value is, on avera…

(statistics) the entire aggregation of items from which sampl…

5 number summary

The minumum value, lower quartile, median, upper quartile, an…

z score

a measure of how many standard deviations you are away from t…

How do you check if there is outliers?

If a graph is skewed, should we calcul…

If a graph is roughly symmetrical, sho…

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 calcul…

median; it is resistant to skews and outliers

5 number summary

z score

standard deviation

population

The minumum value, lower quartile, median, upper quartile, an…

a measure of how many standard deviations you are away from t…

A statistical measure of how far away each value is, on avera…

(statistics) the entire aggregation of items from which sampl…

5 number summary

The minumum value, lower quartile, median, upper quartile, an…

z score

a measure of how many standard deviations you are away from t…

5 number summary

z score

standard deviation

population

The minumum value, lower quartile, median, upper quartile, an…

a measure of how many standard deviations you are away from t…

A statistical measure of how far away each value is, on avera…

(statistics) the entire aggregation of items from which sampl…

5 number summary

The minumum value, lower quartile, median, upper quartile, an…

z score

a measure of how many standard deviations you are away from t…

categorical data

continuous data

data

data collection

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

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

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

Gathering information for selected population members through…

categorical data

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

continuous data

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

5 number summary

z score

standard deviation

population

The minumum value, lower quartile, median, upper quartile, an…

a measure of how many standard deviations you are away from t…

A statistical measure of how far away each value is, on avera…

(statistics) the entire aggregation of items from which sampl…

5 number summary

The minumum value, lower quartile, median, upper quartile, an…

z score

a measure of how many standard deviations you are away from t…

5 number summary

z score

standard deviation

population

The minumum value, lower quartile, median, upper quartile, an…

a measure of how many standard deviations you are away from t…

A statistical measure of how far away each value is, on avera…

(statistics) the entire aggregation of items from which sampl…

5 number summary

The minumum value, lower quartile, median, upper quartile, an…

z score

a measure of how many standard deviations you are away from t…

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…

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…

Binomial probability model

1. There are two possible outcomes (success and failure).... 2.…

- Tells us the probability for a random variable that counts…

Mean = 1/p... SD = sqrt(q)/p

- Tells us the probabilty for a random variable that counts t…

Conditions for Bernoulli Trials

1. There are two possible outcomes (success and failure).... 2.…

Geometric probability model

- Tells us the probability for a random variable that counts…

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

Type I Error

Type II Error

z-distribution

normal

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

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

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

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

Type I Error

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

Type II Error

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

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 inter…

Investigators apply the treatments to experimental units (peo…

Population

The entire collection of individuals or objects that you want…

Sample

Part of the population selected for the study.

individuals

variable

categorical variable

quantitative variable

objects (people, animals, things) described by a set of data

any characteristic of an individual

places an individual into one of several groups or categories…

takes numerical values for which it makes sense to find an av…

individuals

objects (people, animals, things) described by a set of data

variable

any characteristic of an individual

Individuals

Variable

Categorical Variable

Quantitative Variables

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

Any characteristic of an individual.

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

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

Individuals

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

Variable

Any characteristic of an individual.

5 number summary

z score

standard deviation

population

The minumum value, lower quartile, median, upper quartile, an…

a measure of how many standard deviations you are away from t…

A statistical measure of how far away each value is, on avera…

(statistics) the entire aggregation of items from which sampl…

5 number summary

The minumum value, lower quartile, median, upper quartile, an…

z score

a measure of how many standard deviations you are away from t…

How do you check if there is outliers?

If a graph is skewed, should we calcul…

If a graph is roughly symmetrical, sho…

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 calcul…

median; it is resistant to skews and outliers

One proportion z-test conditions

One proportion givens

One proportion null hypothesis

One proportion alternative hypothesis

1. One SRS is given/assumed... 2. np̂ > 10... 3. nq^ > 10... 4. Popula…

p, p̂, x, n, SRS

p = ____

p (>/</≠) ____

One proportion z-test conditions

1. One SRS is given/assumed... 2. np̂ > 10... 3. nq^ > 10... 4. Popula…

One proportion givens

p, p̂, x, n, SRS

What is a dotplot?

What's the difference between categori…

What is a bar chart?

What are histograms?

A graphical display which shows "dots" for each point. It's g…

Categorical data fits into various categories; whereas, quant…

A display for categorical data which indicates frequencies or…

Histograms are good for large quantitative data sets- either…

What is a dotplot?

A graphical display which shows "dots" for each point. It's g…

What's the difference between categori…

Categorical data fits into various categories; whereas, quant…

LSRL

standard deviation

outlier rule

linear transformations

Least Squares Regression Line: the linear fit that matches th…

Measures spread by giving the "typical" or "average" distance…

Upper Bound = Q3 + 1.5(IQR)... Lower Bound = Q1 - 1.5(IQR)... IQR =…

Adding "a" to every member of a data set adds "a" to the meas…

LSRL

Least Squares Regression Line: the linear fit that matches th…

standard deviation

Measures spread by giving the "typical" or "average" distance…

Population

Sample

Sampling

Census

The entire group of individuals we want data or information a…

The subset of population we collect data from.

Studying a part to gain info about the whole (studying the sa…

Contacts every individual of the population.

Population

The entire group of individuals we want data or information a…

Sample

The subset of population we collect data from.

How do you check if there is outliers?

If a graph is skewed, should we calcul…

If a graph is roughly symmetrical, sho…

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 calcul…

median; it is resistant to skews and outliers

formula for 1-proportion z-interval

formula for 1 sample t-interval for a…

type I error

type II error

Rejecting a null hypothesis when it is in fact true.

Failing to reject a null hypothesis when it is in fact false.

formula for 1-proportion z-interval

formula for 1 sample t-interval for a…

Density Curve

Median of density curve

Quartiles

Mean of density curve

A curve that is always above the horizontal axis and has an a…

The "equal areas" part, the part with half the curve to it's…

Area under the curve is divided into quarters

The "balance" part

Density Curve

A curve that is always above the horizontal axis and has an a…

Median of density curve

The "equal areas" part, the part with half the curve to it's…