In a frequency distribution having class intervals 0 – 10, 10 – 20, 20 – 30 and 30 – 40, the respective frequencies are x, x + 8, x – 2 and x – 4 and the arithmetic mean of the distribution is 17.8.

The modal class is

Which one of the following statements is correct ?

Consider the following statements : 1. A frequency distribution condenses the data and reveals its…

In a frequency distribution having class intervals 0 – 10, 10 – 20, 20 –…

In a frequency distribution having class intervals 0 – 10, 10 – 20, 20 –…

The average weight of a class of 15 boys and 10 girls is 38.4 kg.…