1 A dot plot showsA) The general shape of a distribution B) The mean, median, and mode C) The relationship between two variables D) The interquartile range. 2 The test scores for a class of 101 students are computed. What is the location of the test score associated with the third quartile?A) 75% B) 31 C) 50.0 D) 76.5 3 The test scores for a class of 50 students are computed. What is the location of the test score associated with the second decile?A) 20% B) 31 C) 10.2 D) 20.5 4 To draw a box plot that summarizes a data set,A) Two values are required: 1^{st} quartile, 3^{rd} quartile, B) Three values are required: minimum, median, and maximum C) Four values are required: minimum, 1^{st} quartile, 3^{rd} quartile, and maximum D) Five values are required: minimum, 1^{st} quartile, median, 3^{rd} quartile, and maximum 5 The inter quartile range of a set of observations isA) The difference between the minimum and maximum values B) The standard deviation. C) The difference between the 1^{st} and 3^{rd} quartiles. D) Appropriate only for symmetric distributions. 6 For any symmetric distributionA) The mean, median, and mode are equal. B) The mean is the largest measure of location. C) The median is the largest measure of location. D) The standard deviation is the largest value. 7 For a positively skewed distributionA) The mean, median, and mode are equal. B) The mean is the largest measure of location. C) The median is the largest measure of location. D) The standard deviation is the largest value. 8 For a negatively skewed distributionA) The mean, median, and mode are equal. B) The mean is the largest measure of location. C) The mode is the largest measure of location. D) The standard deviation is the largest value. 9 A coefficient of skewness of -2.73 was computed for a set of data. We conclude thatA) The mean is larger than the median. B) The median is larger than the mean. C) The standard deviation is a negative number. D) The distribution is positively skewed. 10 The purpose of a contingency table is to summarizeA) Two continuous, ratio variables B) Two discrete, ratio variables C) Two discrete, nominal or ordinal variables. D) Two discrete, continuous variables. 11 A scatter diagram:A) Is a graphic tool designed to portray the relationship between two variables. B) Uses interval or ratio scale data. C) Does not allow negative values. D) Both A and B are correct. 12 Contingency tables and scatter diagrams describeA) Univariate data B) Qualitative data C) Bivariate data D) Frequency data