Write It In Symbols
The correlation coefficient
r
In a survey, providing proportional representation to groups who may show differences with respect to the response variable.
What is stratifying?
The mean of a binomial random variable, if the number of trials is 20 and the probability of success is 25%.
It's Walmart's brand of Lucky Charms.
What are Magic Treasures?
The standard deviation of the sampling distribution of a sample proportion.
sigma_{hatp}
Making a prediction outside of the domain of a scatterplot.
What is extrapolation?
For a chi-square test of independence, if the data is provided in a table with 3 rows and 4 columns, then this is the number of degrees of freedom.
What is 6?
The year the first AP Stats exam was given.
What is 1997?
In set notation, "and".
What is
cap
The chance that your study detects an effect, is an effect is truly present.
What is power?
It's the critical value for a 99% CI for population proportion.
What is 2.576?
He was Joy Milne's husband.
Who is Les.
The true slope of a regression line
beta
This type of study investigates past data.
What is a retrospective study.
The z-score for the 25th percentile in a standard normal distribution.
What is
-2/3?
It's a big killer of manatees, apparently.
What are powerboats?