Prepare for the AP Statistics exam with these practice questions and answers. This guide covers exploring data, sampling, probability, statistical inference, and regression analysis.
Q: Sample Proportion
Answer: ^p
Q: Sample Mean
Answer: -x
Q: Population proportion
Answer: p
Q: Population Mean
Answer: u
Q: Population Standard Deviation
Answer: o
Q: What is the distribution of values taken by a statistic in all possible samples of the same size from the same population called?
Answer: the sampling distribution
Q: The central limit theorem refers to which of the following characteristic of the sampling distribution of the sample mean?
Answer: the sample distribution of the sample mean from sufficiently large samples will be approximately normally distributed.
Q: What does it mean for a statistic to be an unbiased estimator of the parameter?
Answer: Accurate.
Q: What is sampling variability?
Answer: The value of a statistic will vary in repeated sampling.
Q: What is a sampling distribution?
Answer: Describes the possible values and how often the values occur. Distribution of a statistic.
Q: How can you reduce the variability of a statistic?
Answer: By taking a larger sample.
Q: Accurate
Answer: unbiased
Q: Precise
Answer: low variability