AP Stats Exam Review - Stats Medic Questions With Complete Solutions

How to describe a 1-variable distribution correct answer: SOCS + context Ways to describe the shape of a distribution (S) correct answer: Symmetric = balanced on both sides of the center Skewed right = tail (part with less stuff) is located to the right of the center Skewed left = tail is located to the left of the center When describing this part of a distribution, always use -ly words in your description (fairly, slightly, strongly, appropriately, etc.) Outlier Formula (3rd Quartile, too high) (O) correct answer: > Q3 + 1.5 (IQR) Outlier Formula (1st Quartile, too low) (O) correct answer: < Q1 - 1.5 (IQR) Ways to measure the center of a distribution (C) correct answer: Mean, median, and mode We aren't going to use mode Ways to measure the spread of a distribution (S) correct answer: Range, standard deviation, and IQR Standard deviation & IQR are much more accurate than range How to determine the center and spread of a symmetric distribution correct answer: center = mean spread = standard deviation How to determine the center and spread of a skewed distribution correct answer: center = median spread = IQR IQR formula correct answer: Q3-Q1 standard deviation correct answer: A measure of spread/variability that gets the average distance from the mean Sample description of a 1-variable distribution correct answer: # of hours of sleep 3 5 6 6 7 7 7 7 8 8 The distribution of the hours of sleep is slightly skewed left