Draw and describe a normal curve and a frequency distribution. Determine the mean, median, mode, and standard deviation of the following sets:
a. 8, 12, 27, 27, 34, 38, 39, 41, 41, 41, 50, 53, 53, 54, 55, 55, 58, 62, 67, 70, 72, 80, 95, 250, 300
b. 56, 60, 64, 66, 68, 69, 72, 73, 74, 75, 78, 78, 79, 80, 82, 82, 83, 83, 84, 85, 85, 85, 85, 87, 87, 87, 90, 91, 92, 94, 95, 96, 97, 98, 98, 100
c. 20, 22, 29, 30, 34, 38, 40, 43, 44, 45, 45, 50, 51, 53, 55, 58, 60, 63, 63, 66, 68, 70, 74, 75, 77, 80, 85, 90, 93, 96, 100
d. 34, 35, 36, 40, 41, 50, 55, 59, 60, 61, 62, 94, 95, 96
a. Mean = 67.28, Median = 53, Mode = 41 (Note that the extreme scores, especially 250 and 300, skew the mean noticeably.)
b. Mean = 82.17, Median = 83.5, Mode= 85
c. Mean = 58.61, Median = 58, Mode= 45, 63
d. Mean = 58.43, Median = 57, Mode= All
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