Question

The following scores represent the final examination grade for an
elementary statistics course, the values of N=3,6,9,12,15,20,25,30,35,40:
23 60 79 32 57 74 52 70 82
80 77 81 95 41 65 92 85 55
52 10 64 75 K+N 78 25 80 98
81 41 71 83 54 64 72 88 62
74 60 78 89 76 84 48 84 90
15 34 67 17 82 69 74 63 80 85
(a) Construct a stem and leaf plot for the examination of grades.
(b)Set up a frequency distribution table and tally bars.
(c) Construct a histogram, draw estimate of the graph of the distribution and discuss
skewness of the distribution.
(d)Compute the sample mean, sample median, mode and sample standard deviation
also interpret your results.

Answer 1

Answer:

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Answer 2

Answer:

set up a frequency distribution table and tally bars