The following data represent the number of cars that arrived at a McDonald\'s dr

Question

The following data represent the number of cars that arrived at a McDonald's drive-through between 11:50 A.M. and 12:00 noon each Wednesday for the past 50 weeks: (a) Construct a frequency distribution of the data. (b) Construct a relative frequency distribution of the data. (c) Construct a cumulative frequency distribution of the data. (d) Construct a cumulative relative frequency distribution of the data. (e) Construct a frequency histogram of the data. Describe the shape of the distribution. (f) Construct a relative frequency histogram of the data. (g) What percentage of weeks did exactly three cars arrive between 11:50 A.M. and 12:00 noon? (h) What percentage of weeks did three or more cars arrive between 11:50 A.M. and 12:00 noon?

Explanation / Answer

Ordering the data,
1
1
1
1
1
2
2
2
2
2
2
2
3
3
3
3
3
3
3
3
3
3
3
3
4
4
4
4
4
4
5
5
5
5
5
5
5
5
6
6
6
6
6
7
7
8
8
8
8
9

For parts A to D, please consider the table:

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x f RF CF CRF 1 5 0.1 5 0.1 2 7 0.14 12 0.24 3 12 0.24 24 0.48 4 6 0.12 30 0.6 5 8 0.16 38 0.76 6 5 0.1 43 0.86 7 2 0.04 45 0.9 8 4 0.08 49 0.98 9 1 0.02 50 1

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