Note: The text says use 15 but I want you to use 11 intervals (exactly 11 intervals, not 10, not 12Jit makes for a nicer answer). Use the table you create (with 11 intervals) to answer questions

5b),

5c),

5d),

5e),

5f)

5. The following scores were obtained by a college sophomore class on an English exam: 6 0 94 75 82 72 57 92 75 85 77 91 72 85 64 78 75 62 49 70 94 72 84 55 90 88 81 64 91 79 66 68 67 74 45 76 73 6 8 85 73 8 3 85 71 87 57 8 2 78 68 70 71 78 69 98 65 61 83 8 4 69 77 81 87 79 64 72 55 76 68 9 3 56 67 71 83 72 82 78 62 82 49 6 3 73 89 78 81 93 72 76 73 90 76 a. Construct a frequency distribution o f the ungrouped scores (i 1).

c. Construct a histogram of the frequency distribution constructed in part b.

d. Is the distribution skewed or symmetrical? If it is skewed, is it skewed positively or negatively?

e. Construct a stem a nd leaf diagram with the last digit being a leaf and the first digit a stem. Repeat stem values twice.

f. Which diagram do you like better, the histogram of part c or t he stem and leaf diagram of part e? Explain.