Directions: In 1-8, use the frequency table that follows. It displays the results of a survey where an SRS of size 200 college professors submitted their number of grandchildren. Grandchildren Frequency (f) Midpoint (x) Positions 0-3 60 1.5 x to X60 4-7 40 5.5 X61 to X100 8-11 50 9.5 X101 to X150 12-15 25 13.5 Xis1 to X175 16-19 12 17.5 X176 to X187 20-23 10 21.5 X188 to X197 24-27 3 25.5 197 to X 200 SUM 200 n/a n/a 1) What is the modal class of this dataset? A. 0-3 B. 4-7 C. 8-11 D. 12-15 E. None of these 2) What is the midrange of this dataset? A. 26 B. 13 C. 27 D. 13.5 E. None of these 3) What is the median of this dataset? A. 5.5 B. 7.5 C. 9.5 D. 11.5 E. 13.5 4) What is the range of this dataset? A. 13 B. 13.5 C. 24 D. 26 E. 27 5) What is O3 ? A. 5.5 B. 7.5 C. 9.5 D. 11.5 E. 13.5 6) What is Dy ? A. 5.5 B. 9.5 C. 13.5 D. 17.5 E. 21.5 7) At what decile value is the first of the forty 5.5s? . A. D2 B. D. C. DA D. DS |E. D 8) If the last of the twelve 17.5s is at percentile Pi , what is the value of I ? A. 12 .B. 93 C. 93.5 D. 94 E. 187