Question

Below is the number of times a commercial was shown displaying high fat, high sugar foods during children’s programming over each of 20 days.

21, 8, 11, 9, 12, 10, 10, 5, 9, 18, 17, 3, 6, 14, 18, 16, 19, 3, 22, 7

(a) Create a simple frequency distribution for these grouped data with four intervals.

(b) Which interval had the largest frequency?

Additional requirements for question:

1. The frequency table must include the following columns:

Values

Frequencies

Relative Frequencies

Cumulative Frequencies

Cumulative Percents

2. Create a bar graph of the frequencies

Answer 1

a)

Sr. no	class interval	frequency
1	3-7	5
2	8-12	7
3	13-17	3
4	18-22	5

........

Sr. no	class interval	frequency	relative frequency=fi/N	cumulative frequency	%relative frequency	%cumulative frequency
1	3-7	5	0.250	5	25.00%	25.00%
2	8-12	7	0.350	12	35.00%	60.00%
3	13-17	3	0.150	15	15.00%	75.00%
4	18-22	5	0.250	20	25.00%	100.00%

.............

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