AP Statistics Vocabulary List Study Guide Exam Questions 2024.

AP Statistics Vocabulary List Study Guide Exam Questions 2024. Statistical Significance - correct answer When your discovered p-value is less than your alpha (.05 if not given). States that chance alone would rarely produce an equally extreme result. Non-Response Bias - correct answer A bias caused by a number of people who did not respond to the survey. p-Value - correct answer The probability of getting a result at least as extreme as the result given from the test. The lower the value the stronger the evidence. Empirical rule - correct answer States that, in a normal distribution, about 68% of the terms are within one standard deviation of the mean, about 95% are within two standard deviations, and about 99.7% are within three standard deviations (normal curve). Lurking Variable - correct answer A variable other than x and y that simultaneously affects both variables, accounting for the correlation between the two. Null Hypothesis - correct answer The hypothesis that states there is no difference between two or more sets of data in a significance test. Quota Sample - correct answer A sample deliberately constructed to reflect several of the major characteristics of a given population. Probability - correct answer The likelihood that a particular event will occur. Descriptive Statistics - correct answer Statistical procedures used to describe characteristics and responses of groups of subjects. Median - correct answer The middle score in a distribution; half the scores are above it and half are below it.