1 ) The statistic most descriptive of the middle 50 percent of the distribution is a. the interquartile range O b. the range o d. 2) Data Set 4-6 -1, 3, 0, 2, 1 In Data Set 4-6 the score of 0 has a deviation score of C a1 b. 0 o d-1 Question 3 Another name for E( X - X) 2 is O a. mean square O b. sum of squares O c. deviation range O d. variance Data Set 4-2 5, 3, 9, 7, 6 The raw score of 7 in Data Set 4-2 has a deviation score of O a. 7 O b. 0 O c. 1 O d. 2