By Duane C. Hinders — McGrawHill Professional
Updated on Feb 5, 2011
Review the following concepts if necessary:
 Graphical Analysis for AP Statistics
 Histogram for AP Statistics
 Measures of Center for AP Statistics
 Measures of Spread for AP Statistics
 Position of a Term in a Distribution for AP Statistics
 Normal Distribution for AP Statistics
Problems
 The following list is ordered from smallest to largest: 25, 26, 26, 30, y, y, y, 33, 150. Which of the following statements is (are) true?
 The mean is greater than the median
 The mode is 26
 There are no outliers in the data
 I only
 I and II only
 III only
 I and III only
 II and III only
 Jenny is 5'10" tall and is worried about her height. The heights of girls in the school are approximately normally distributed with a mean of 5'5" and a standard deviation of 2.6". What is the percentile rank of Jenny's height?
 59
 65
 74
 92
 97
 The mean and standard deviation of a normally distributed dataset are 19 and 4, respectively. 19 is subtracted from every term in the dataset and then the result is divided by 4. Which of the following best describes the resulting distribution?
 It has a mean of 0 and a standard deviation of 1.
 It has a mean of 0, a standard deviation of 4, and its shape is normal.
 It has a mean of 1 and a standard deviation of 0.
 It has a mean of 0, a standard deviation of 1, and its shape is normal.
 It has a mean of 0, a standard deviation of 4, and its shape is unknown.
 The fivenumber summary for a onevariable dataset is {5, 18, 20, 40, 75}. If you wanted to construct a modified boxplot for the dataset (that is, one that would show outliers if there are any), what would be the maximum possible length of the right side "whisker"?
 35
 33
 5
 55
 53
 A set of 5,000 scores on a college readiness exam are known to be approximately normally distributed with mean 72 and standard deviation 6. To the nearest integer value, how many scores are there between 63 and 75?
 0.6247
 4,115
 3,650
 3,123
 3,227
 For the data given in #5 above, suppose you were not told that the scores were approximately normally distributed. What can be said about the number of scores that are less than 58 (to the nearest integer)?
 There are at least 919 scores less than 58.
 There are at most 919 scores less than 58.
 There are approximately 919 scores less than 58.
 There are at most 459 scores less than 58.
 There are at least 459 scores less than 58.
 The following histogram pictures the number of students who visited the Career Center each week during the school year.
 Moundshaped and symmetric
 Bimodal
 Skewed to the left
 Uniform
 Skewed to the right
 Which of the following statements is (are) true?
 The median is resistant to extreme values.
 The mean is resistant to extreme values.
 The standard deviation is resistant to extreme values.
 I only
 II only
 III only
 II and III only
 I and III only
 One of the values in a normal distribution is 43 and its zscore is 1.65. If the mean of the distribution is 40, what is the standard deviation of the distribution?
 3
 –1.82
 –0.55
 1.82
 –0.55
 Freeresponse questions on the AP Statistics Exam are graded on 4, 3, 2, 1, or 0 basis. Question #2 on the exam was of moderate difficulty. The average score on question #2 was 2.05 with a standard deviation of 1. To the nearest tenth, what score was achieved by a student who was at the 90th percentile of all students on the test? You may assume that the scores on the question were approximately normally distributed.
 3.5
 3.3
 2.9
 3.7
 3.1
The shape of this graph could best be described as

1
 2
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From 5 Steps to a 5 AP Statistics. Copyright © 2010 by The McGrawHill Companies. All Rights Reserved.
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