Organizing Data
Data Relationships
Producing Data & Experiments
Probability & Distributions
Inference & Tests
100
This measure of center is more resistant to outliers than the mean.
What is the median?
100
observed y - predicted y
What is the residual?
100
This phrase is used to describe an observed effect so large that it would rarely occur by chance.
What is statistically significant?
100
This type of random variable requires a fixed number of trials.
What is a binomial random variable?
100
The type of significance test used for the mean of a single population when the standard deviation of the population is unknown.
What is a T test (or T procedure)?
200
To calculate, subtract the mean of the distribution from the observed x, then divide by the standard deviation.
What is the z-score (or standardized value)?
200
Measures the direction and strength of a linear relationship between two quantitative variables.
What is correlation (or r)?
200
This is a variable that is related to the explanatory variable and influences the response variable and makes it challenging to determine cause and effect.

What is a confounding variable?

200

This is the formula to show independence between two events.

What is 

P(A|B)=P(A) or 

P(B|A)=P(B) or 

P(A and B)=P(A) times P(B)?

200
The formula to calculate the one-sample z statistic.
What is z = (x bar minus mu sub o) divided by (sigma divided by the square root of n) ?
300
This rule helps to determine if data is normally distributed by checking the number of observations within each interval.
What is the 68-95-99.7 rule?
300

The proportion of the variables in the values of y that is explained by the LSR of y on x.

What is the coefficient of determination (or r squared)?

300
This experimental design involves the random assignment of units to treatments which are carried out separately within each group of units known to be similar in some way that is expected to affect the responses.
What is block design?
300
Events that have no outcomes in common and can never occur simultaneously, for which the addition rule is used.
What are disjoint events (or mutually exclusive events)?
300

Rejecting a true null hypothesis

What is a Type I Error?

400
The square of the standard deviation.
What is the variance?
400

A point in regression that has a substantially larger or smaller x-value than the other observations have.

What is a high leverage point?

400
The 3 basic principles of experimental design.
What are control, randomize, and replicate?
400
The condition involving the population size that must be satisfied to use sigma divided by the square root of n as the standard deviation of a sampling distribution.
What is 'the population is at least 10 times the sample size'?
400

These are the three conditions to be verified for inference about a proportion.

What are random sample, the population size be greater than or equal to 10n (independence) and n times p & n times (1 - p) be greater than or equal to 10 (for approximately normal sampling distribution)?

500
This calculator command can be used to find the area under a normal distribution and above an interval.
What is normalcdf?
500

These characteristics are used when describing the relationship between 2 quantitative variables.

What are form, unusual values, direction and strength?

500
The five steps of a simulation.
What are state/describe the problem, state assumptions, assign digits, simulate repetition, and state the conclusion?
500

The formula to determine the standard deviation for the sum of two discrete random variables.

What is sigma sub x+y = the square root of (sigma sub x) squared + (sigma sub y) squared

500

These two factors will increase the width of a confidence interval.

Decreasing the sample size (n) AND increasing the confidence level.

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