Question

Plzz
Answer my question which is marked

Answer 1

The model calss for the following distribution is 10.

(Its written there that below 10,below 20.........below60. So subtract 20-10=10,30-20=10.......60-50=10)
Xi
10-20
20-30
30-40
40-50
50-60

Answer 2

The answer is 10
...thanks