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Organizing Data
Data Relationships
Data & Experiments
General Knowledge
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

A type of graph whose slices are sized by the counts or percentages of each categories.

What is a pie chart?

100

This allows every group of size n to have an equal chance to be selected as the sample

What is a Simple Random Sample

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
randInt(1,9,3)
What is the calculator command for generating 3 random numbers from 1 to 9?
200

The type of variable that describes the values among individuals who have a specific value of another variable.

What is a conditional distribution?

200

The formula to calculate the one-sample z statistic.

What is z = (x bar minus mu) divided by (sigma)?

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 or the Empirical rule?

300
The fraction 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

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

The midpoint of a distribution, such that half of the observations are smaller and half are larger.

What is the Median?

300

When an individual chosen for the sample can't be contacted or refuses to participate

What is Nonresponse?

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

These graphs are used for percentiles and show what percent of the data is below a particular value.

What is a cumulative relative frequency plot \?

400

The 4 basic principles of experimental design.

What are control, randomize, and replicate, compare?

400

(x-mu)/sigma

What is a Z score?

400

Neither the subjects nor those who interact with them know which treatment the subjects received.

What is double-blind

500

This calculator command can be used to find the area under a normal distribution or within an interval.

What is normalcdf?

500
Refers to the reversal of the direction of a comparison or an association when data from several groups are combined to form a single group.
What is Simpson's Paradox?
500

Data from every individual in the population

What is a census

500

The midpoint of a distribution

What is the median

500

1.5 X IQR is used to find this

What is an outlier?