AP STATS EXAM REVIEW
Chapter 8 Chapter 13 and 14 Chapter 11 and 12 Chapter 9 and Chapter 10 Chapter 7
This type of variable has a countable number of outcomes Categories
Discrete
The normal distribution is this type of probability distribution Categories
continuous
This is what the law of large numbers means Categories
As the number of observations increases, the mean of the observed values eventually approaches the mean of the population
This is how to find the mean of a discrete distribution Categories Chapter Points
Categories The sum of each x multiplied by its probability Chapter Points
σ 2 of a + bx equals Categories Chapter Points
Categories b2σ2b2σ2 Chapter Points
These are the three pieces of information you must have in order to find a binomial probability (put them in order like you would on your calculator Categories Chapter Points
Categories N, p, r
Chapter Points This distribution allows you to find the probability of having a certain number of failures before your first success Categories
geometric Chapter Points
Chapter Points A basketball player makes 80% of his free throws. What is the probability that he will make 5 shots before he misses Categories
Chapter Points Categories.8 5 (.2) =.0655
Suppose you purchase a bundle of 10 bare-root broccoli plants. The sales clerk tells you that on average you can expect 5% of the plants to die. Find the probability that you will lose at most one of the broccoli plants. Categories Chapter Points
Categories Binomialcdf(10,.05, 1) =.9138 Chapter Points
The four conditions which make a situation binomial Categories Chapter Points
Categories Two outcomes (success and failure), fixed number of trials, independent trials, same probability for each trial Chapter Points
This rule states that for a large sample size the sampling distribution of x-bar if approximately normal Categories Chapter Points
Chapter 9 and Points Categories Central limit theorem
Chapter 9 and Points This is how you check if the sampling distribution of p-hat is normal Categories
np greater than or equal to 10 Chapter 9/ Points
Chapter 9/ Points This is the definition of a type I error Categories
Chapter 9/ Points Categories Rejecting the null hypothesis when it is actually true
Meaning of a type II error Categories Chapter 9/ Points
Categories We accept the null hypothesis but it is actually false Chapter 3/4 400 Points
This is the probability that a test will reject the null when it is not true (correct decision) Categories Chapter 9/ Points
Categories power Chapter 9/ Points
This is the number of degrees of freedom for a one or two sample mean Categories Chapter 11/ Points
Categories n-1
Chapter 11/ Points This situation requires this type of hypothesis test: to test the effect of background music on productivity, factory workers are observed. For 1 month they had no background music. For another month they had background music Categories
matched pairs Chapter 11/ Points
Chapter 11/ Points This is the standardized statistic for a 99% CI for a proportion Categories
Chapter 11/ Points Categories 2.576
This is the standardized test statistic for a 95% CI of a mean with n= 30 Categories Chapter 11/ Points
Categories Chapter 11/ Points
This is the statistic for a two sample proportion test Categories Chapter 11/ Points
Categories Phat 1 – phat 2 Chapter 11/ Points
This is the null hypothesis for a chi- square goodness of fit Categories Chapter 13/ Points
Categories The population proportions equal the hypothesized values
Chapter 13/ Points This is how to find the expected value on in a two-way table Categories
(row total x column total)/ table total Chapter 13/ Points
Chapter 13/ Points This is the one condition for a chi- squared test Categories
Chapter 13/ Points Categories all expected values are greater than or equal to 5
This is the number of degrees of freedom in a slope test Categories Chapter 13/ Points
Categories N - 2 Chapter 13/ Points
This is how you find the standard error of the slope (used in a confidence interval) Categories Chapter 13/ Points
Categories T = b/SEb Chapter 13/ Points
The Daily Double Categories