Question

Find the no. of observations between 250 and 300 from the following data:

Value	More   than  200	More   than  250	More   than  300	More   than  350
No. of  observations	56	38	15	0

1. 56
2. 23
3. 15
4. 8

Answer 1

Correct Answer - Option 2 : 23

Concept:

To find number of observations between 250 and 300.

first we have to draw a frequency distribution table from this data.

Class Interval	Number of Observation (CF)	Frequency (F)
200-250	56	18
250-300	38	23
300-350	15	15
350-400	0	0
Total		56

∴ The Number of observation in between 250-300 = 38 - 15 = 23.