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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

actual value - predicted value 

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 one-sample T-test (or T procedure)?

200

To calculate, subtract the mean of the distribution from the observed x value, then divide by the standard deviation.

What is the z-score

200
Measures the direction and strength of a linear relationship between two quantitative variables.
What is correlation (or r)?
200

This type of bias can occur when some members of a population cannot be included or are purposefully left out of a sample.

What is undercoverage? 

200
The type of variable where the probability distribution assigns probability as the area under the density curve above a specific interval.
What is a continuous random variable?
200

The formula to calculate the one-sample z statistic.

What is z = (x-mean) / (S.D.)

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

"__________ percent of the variation in (response variable) can be accounted for by the least squares regression line."

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

The condition unique to this type of test is that all expected counts must be greater than 5. 

What is the chi-squared tests? (goodness of fit, independence, or homogeneity tests)

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

True or false

Correlation is the same as causation 

False.

Correlation does not imply causation 

400

By randomly assigning treatments within an experiment we hope to reduce this within our data.

What is bias? 

400

The condition involving the population size that must be satisfied to calculate the standard deviation of a sampling distribution. 

What is "The 10% condition"

400

DOUBLE JEOPARDY 

All three conditions to be verified for inference about a proportion.

What are the population size be greater than or equal to 10n 

n times p hat & n times (1 - p hat) be greater than or equal to 10

Data is collected randomly 

500

This calculator command can be used to find the area under a normal distribution for a given interval.

What is normalcdf?

500

A linear regression model is appropriate to use if this type of plot shows no leftover pattern.

What is a residual plot 

500

This type of variable may influence either the response or explanatory variable, usually in a way that negatively impacts our results. 

What is a confounding variable?

500

If the probability of occurrence of an event A is not affected by the occurrence of another event B, then A and B are said to be ______________

What is "Independent"? 

500
This formula represents the confidence interval for a population proportion. 

What is ______________