AP Statistics Final Exam Questions Correctly Answered 2024.

AP Statistics Final Exam Questions Correctly Answered 2024. Statistical Significance - correct answer An observed effect too large to attribute plausibly to chance. Non-Response Bias - correct answer Bias introduced to a sample when a large fraction of those sampled fails to respond. P-Value - correct answer found by substituting the x-value in the regression equation; they're the values on the fitted line Empirical Rule - correct answer A statistical rule stating that for a normal distribution, almost all data will fall within three standard deviations of the mean. Lurking Variable - correct answer a variable that is not explicitly part of a model but affects the way the variables in the model appear to be related Null Hypothesis - correct answer The null hypothesis attempts to show that no variation exists between variables, or that a single variable is no different than zero. It is presumed to be true until statistical evidence nullifies it for an alternative hypothesis. Quota Sample - correct answer A sampling method of gathering representative data from a group. As opposed to random sampling, quota sampling requires that representative individuals are chosen out of a specific subgroup. Probability - correct answer Quantifiable likelihood (chance) of the occurrence of an event expressed as odds, or a fraction of 1. Descriptive Statistics - correct answer The branch of statistics that includes numerical, graphical, and tabular methods for organizing and summarizing data Median - correct answer the middle value with half of the data above and half below it