Inference
Probability
Distributions
Linear Regression
Experimental designs
100

The significance test used when the standard deviation is not known and only one sample is used

T-test

100

What is the acronym for proving a geometric distribution?

BITS

100

What is the formula to find the mean of a binomial distribution?

M=number of trials * expected proportion of successes
100

What is the formula for slope-intercept form?

y=mx+b
100

How does convenience sampling affect a sample?

Causes the sample to be biased and messed up

200

What test uses the mean difference for the t-procedure? 

matched pair t test

200

What is the B in BINS and BITS?

Binary

200

What are the two ways to show normality in a distribution?

Central Limit Theorem and if the population distribution is normal than the sample distribution is also normal.

200
What is the acronym for the five condition that need to be checked during a slope test?

LINER

200

What kind of bias is it when subjects in the sample do not respond to the sample?

Non response bias

300

Two conditions to be verified for proportion tests

random and large counts

300
How does the formula for P(A or B) change when the event is mutually exclusive?
In the formula, the value of P(A and B) is equal to 0, so the formula is only P(A or B)= P(A)+ P(B)
300

How does a higher p-value affect both Type 1 and Type 2 errors?

It generally increases the values of both a Type 1 error and a Type 2 error.

300
What does a tree pattern in a residual plot mean?

If there is a tree pattern in a residual plot, then a linear model is not a good fit for the plot.

300

What kind of sample involves taking a random group of units and dividing them based on something they have in common and then sampling them separately?

Stratified random sample

400
In what way does a sample size effect the margin of error for confidence intervals?

It decreases the margin of error of a confidence interval

400

Diffference between binomial and geometric distributions

Binomial distributions are distributions that have a fixed number of trials while geometric distributions keep going until a success is made.

400

What is the empirical rule for a normal distribution?

1 standard deviation is 68% of the data, 2 standard deviations is 95% of the data, and 3 standard deviations is 99.7% of the data.

400

How to interpret r^2?

__% of the data can be explained by the linear regression model

400

What are the three components of an experiment?

Randomization, replication, and control

500
What are the 3 chi-squared tests? 

Goodness of fit, homogeneity, and independence tests

500

Independence vs Mutually exclusive

Mutually exclusive events are not physically possible to happen at the same time, and independent events are two events that occurred at the same time, but they have no correlation to each other.

500
What is the formula for adding distribution's data for mean and standard deviation?

Mean: m1+m2

Standard Deviation: sqrt of sd1^2+sd2^2

500

How to interpret r?

__% of the data shows a (strong,weak, moderate) and (positive or negative) relationship between the variables.
500

Difference between a block design and a stratified random sample

In block designs, units are blocked based on a control, while stratified random sampling is based on relevant characteristics.

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