1. The following data concerns the number of customers that visit a restaurant on certain days. From the data, construct an ordered array, a frequency distribution, a cumulative frequency distribution, a relative frequency distribution and a cumulative relative frequency distribution for this data. For all of the distributions use class intervals of width 10, beginning with multiples of 10 (10-19, 20-29, etc.). Also draw a pie-chart or a histogram for the relative frequency distribution. 19 60 34 53 44 48 47 46 52 64 28 20 44 34 45 63 40 17 35 13 22 18 26 54 38 2. A company surveyed customers to determine their hours of Internet usage per day. Based on the following sample observations, compute the mean, median, mode, range, variance, standard deviation, sixty-fifth percentile, interquartile range, the coefficient of variation and the Z score for a usage time of 4.5 hours. (All times are in hours.) {3.8, 7.3, 3.5, 3.0, 4.5, 4.6}
1. The following data concerns the number of customers that visit a restaurant on certain days. From the data, construct an ordered array, a frequency distribution, a cumulative frequency distribution, a relative frequency distribution and a cumulative relative frequency distribution for this data. For all of the distributions use class intervals of width 10, beginning with multiples of 10 (10-19, 20-29, etc.). Also draw a pie-chart or a histogram for the relative frequency distribution.
|
19 |
60 |
34 |
53 |
44 |
|
48 |
47 |
46 |
52 |
64 |
|
28 |
20 |
44 |
34 |
45 |
|
63 |
40 |
17 |
35 |
13 |
|
22 |
18 |
26 |
54 |
38 |
2. A company surveyed customers to determine their hours of Internet usage per day. Based on the following sample observations, compute the mean,
variation and the Z score for a usage time of 4.5 hours. (All times are in hours.)
{3.8, 7.3, 3.5, 3.0, 4.5, 4.6}
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