1The data represent the time, in minutes, spent reading a political blog in a da

Question

1The data represent the time, in minutes, spent reading a political blog in a day. Construct a frequency distribution using

5 classes. In the table, include the midpoints, relative frequencies, and cumulative frequencies. Which class has the greatest frequency and which has the least frequency?

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WHich class has the greatest frequency? The class with the greatest frequncy is from _____ to ______

which class has the least frequency? the class with the least frequency is from ____ to ______

29 19 2 20 5 18 18 6 10 29 0 17 27 25 15 26 3 17 23

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Explanation / Answer

Minimum value = 0

Maximum value = 29

Range = 29 - 0 = 29

Number of classes = 5

Width of the class interval = ( 29 / 5 ) = 5.8 = 6 ( approximately )

The frequency distribution table is given below :

The class with the greatest frequency is from 23.5 to 29.5

The class with the least frequency is from 5.5 to 11.5 .

Frequency distribution table Class interval Frequency Midpoint Relative frequency Cumulative frequency - 0.5 - 5.5 4 2.5 0.20 4 5.5 - 11.5 2 8.5 0.10 6 11.5 - 17.5 3 14.5 0.15 9 17.5 - 23.5 5 20.5 0.25 14 23.5 - 29.5 6 26.5 0.30 20 Total 20 1

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