The time taken, in seconds, to solve a problem by each of 25 pupils is as follows:16, 20, 26, 27, 28, 30, 33, 37, 38, 40, 42, 43, 46, 46, 46, 48, 49, 50, 53, 58, 59, 60, 64, 52, 20(a) Construct a frequency distribution for these data, using a class interval of 10 seconds.(b) Draw a histogram to represent the frequency distribution.

The time taken, in seconds, to solve a problem by each of 25 pupils is

1.	The time taken, in seconds, to solve a problem by each of 25 pupils is as follows:16, 20, 26, 27, 28, 30, 33, 37, 38, 40, 42, 43, 46, 46, 46, 48, 49, 50, 53, 58, 59, 60, 64, 52, 20(a) Construct a frequency distribution for these data, using a class interval of 10 seconds.(b) Draw a histogram to represent the frequency distribution.
Answer» The time taken, in seconds, to solve a problem by each of 25 pupils is as follows: 16, 20, 26, 27, 28, 30, 33, 37, 38, 40, 42, 43, 46, 46, 46, 48, 49, 50, 53, 58, 59, 60, 64, 52, 20 (a) Construct a frequency distribution for these data, using a class interval of 10 seconds. (b) Draw a histogram to represent the frequency distribution.