Question: Mail. Here are the number of pieces of mail received at a school office for 36 days.
123 70 90
80 78 72
52 103 138
112 92 93
118 118 106
95 131 59
151 115 97
100 128 130
66 135 76
143 100 88
110 75 60
115 105 85
a) Plot these data.
b) Find appropriate summary statistics.
c) Write a brief description of the school's mail deliveries.
d) What percent of the days actually lie within one standard deviation of the mean? Comment.