Rejecting the H0
This phrase is used to describe an observed effect so large that it would rarely occur by chance.
What is statistically significant?
This type of random variable requires a fixed number of trials, each observation to be independent, and to have two outcomes ("success" or "failure").
What is a binomial random variable?
This calculator command can be used to find the area under a normal distribution and above an interval.
What is normalcdf?
The idea that different samples from the same population of the same size will produce difference estimates.
What is sampling variability?
What date is the (make up) AP Stat Exam?
What is May 20th?
True/false: When conducting a significance test for a mean, the population standard deviation is usually unknown.
True
The probability of rolling a fair die three times and getting three fours.
What is P(rolling three 4s) = P(4)*P(4)*P(4) = 1/216
This rule helps to determine if data is normally distributed by checking the number of observations within 1, 2, and 3 standard deviations away from the mean.
What is the Empirical Rule (68-95-99.7 Rule)?
Neither the subject nor those who measure the response variable know which treatment a subject received.
What is a double-blind experiment?
40 questions
What is the number of multiple choice questions on an AP Statistics Exam?
The three conditions needed for a z-test.
What are the random condition, 10% condition, and large counts condition?
For a limited time when you purchased a Pepsi, 1-in-6 of the bottles gave you a win and therefore a prize. We rolled a die 30 times and recorded the number of wins where 6 = win. What did we do?
What is a simulation?
This measure of center is more resistant to outliers than the mean.
What is the median?
Divide the population into nonoverlapping groups of individuals that are similar in some way that might affect their responses. Then choose a separate SRS from each group.
What is a stratified random sample?
6 questions
What is the number of Free Response Questions on an AP Statistics Exam?
Write the conclusion for a 95% confidence interval (-4.25,-1.33) for the average drop in grades.
What is "We are 95% confident that the true drop of grades is between -4.25 and -1.33"?
The probability of pulling a red or a Queen from a standard deck of cards.
What is P(red or queen) = P(red) + P(queen) - P(red and queen) = 28/52
The square of the standard deviation
What is the variance?
A company wants to test if the keyboard layout on a smart phone affects the users' typing speed. Of those who volunteered to participate in their experiment, some use smart phones and some do not. What is the best design for their experiment?
What is a randomized block design?
Do you lose points for guessing and getting a multiple-choice question wrong on the AP Statistics Exam?
What is NO?
The conclusion if the p-value of 0.001 given an alpha = 0.05.
What is "since the p-value is less than alpha = 0.05, we reject the null hypothesis, and find convincing evidence for the alternative hypothesis"?
Write in words how you would find the probability of a female given that they are an AP Stats student.
What is P(Female|AP Stats Student) = P(Female AP Stats Student)/P(AP Stats Student)?
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)?
The population is divided into groups. Some groups are randomly selected and all individuals in the chosen groups are sampled.
What is cluster sampling?
Besides SOCV, what two things must I include in the description of comparing two distributions?
What is context and comparative language?