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Exploring Data
Sampling & Experiments
Probability
Inference & Tests
100

Describe a Distribution of graphs/data sets

CUSS+BS


100
observed y - predicted y
What is the residual?
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

Outlier Rule

Lower bound: Q1-1.5IQR

Higher bound: Q3+1.5IQR

200
Measures the direction and strength of a linear relationship between two quantitative variables.
What is correlation (or r)?
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 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 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
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 conditions to use this test include all expected counts be greater than or equal to 1 and no more than 20% of all the expected counts be less than 5.
What is the goodness of fit (or chi-square) test?
400

minimum, Q1, median, Q3, maximum

What is 5 number summary?

400
Applying a logarithmic transformation to both variables causes this type of model to become linear.
What is a power model?
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
Two of the conditions to be verified for inference about a proportion.
What are the population size be greater than or equal to 10n and n times p hat & n times (1 - p hat) be greater than or equal to 10? (SRS could also be one of the two)
500

This calculator command can be used to find the area under a normal distribution and above 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
The formula to determine the variance for a discrete random variable with three possible values.
What is sigma sub x squared = (the square of the difference between x sub 1 and mu multiplied by p sub 1) + (the square of the difference between x sub 2 and mu multiplied by p sub 2) + (the square of the difference between x sub 3 and mu multiplied by p sub 3) ?
500
b +/- t*SE sub b
What is the confidence interval for slope beta of a true regression line?