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

The acronym that describes the relationship between two variables (scatterplot).

What is DUFS.

100
A sample that surveys a SRS from each group.

What is stratified sample?

100

When there is no overlap between two events.

What is mutually exclusive or disjointed

100

The type of significance test used for the means of a single population. 

What is a 1 sample T test ?

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

It attempts to predict future data by relying on historical data.

What is Extrapolation.
200

The way to prove a cause-and-effect relationship.

What is an expereiment?

200

If a A and B are independent, what is the probability of A or B?

What is P(A)+P(B)- P(AandB)

200

The level of significance.

What is alpha. 

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 percent of the variation in the values of y that can be explained by the LSR of y on x.

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

300

In this study, individuals are sampled and information is collected about their past.

What is a retrospective observational study?

300

When one event does not change the probability of another event.

What is independent.

300

The conditions to use these tests include all expected counts be greater than or equal to 5

What are the chi squared tests.

400
The square of the standard deviation.
What is the variance?
400
observed y - predicted y
What is the residual?
400
The 3 basic principles of experimental design.
What are control, randomize, and replicate?
400

Trying to find the probability until the 1st success.

What is geometric distribtution

400

Saying the null hypothesis is true, when it is actually false.

What is a type I error. 

500
This calculator command can be used to find the area under a normal distribution and above an interval.
What is normalcdf?
500
Measures the direction and strength of a linear relationship between two quantitative variables.
What is correlation (or r)?
500

Identify the symbol for the statistics mean. 

What is x-bar?

500

We have a Bernoulli Trial if

What is B -I -S conditions are met.

Two outcomes

Independent

Same probability of success

500

b +/- t* (SE) 

What is the confidence interval for the slope of a true regression line?

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