NAME: ________________________

# ← AP Statistics Semester 1 VocabTest

### Question Limit

of 52 available terms

### 5 Matching Questions

1. variable
2. Random
3. Stratified Random Sample
4. categorical variable
5. Quantitative Variable
1. a a surveying or experimental phenomenon that occurs when the individual outcomes are uncertain
2. b a variable that takes on a numerical value for which it makes sense to do arithmetic operations like averaging
3. c any measurable characteristic of an individual (quantitative or categorical)
4. d a variable that belongs to one of many levels or groups. A proportion is formed by counting how many of the observations belong to the individual groups.
5. e a sample collected by dividing up the population into homogeneous groups and then using an SRS to sample from each group

### 5 Multiple Choice Questions

1. r-squared, the fraction of variation in the values of y that is explained by the least-squares regression of y on x
2. an error made by rejecting the null hypothesis when in fact it is true
3. this refers to a reversal of the direction of a comparison of an association when data from several groups are combined to form a single group
4. the probability of observing a value for a test statistic as extreme or more than the hypothesized given value
5. the entire group of individuals that we want information about

### 5 True/False Questions

1. outlieran individual observation that fall outside the overall pattern of any graph of data

2. double blind experimenta variable that has a significant effect on the response variable in the relationship between two variables in a study, but is not one of the two variables being studied

3. Robusta confidence interval or the outcome of a significance test that is unchanged when the assumptions are violated OR a resistant statistical procedure

4. Law of large numbersa property that states as the number of observations increases, the mean (statistic) of the observed values gets closer and closer to the true parameter

5. Null Hypothesisthe method of collecting, organizing, and then describing data using graphs, numerical summaries in order to make statistical inferences