Question

0.102. For a particular year, following is the distribution of ages (in years) of primary school teachers in a
district:
Age (In years) 15 - 20 20 - 25 25 - 30 30 35 35 40 40.45 45 - 50
No. of Teachers 10
30 50 50
30
6
1
1. Write the lower limit of first class interval.
2. Determine the class limits of the fourth class interval.
3. Find the class mark of the class 45 - 50.
4. Determine the class size

please answer because tomorrow is my final exam​

Answer 1

Answer:

1. Write the lower limit of first class interval.

15 - 20

Ans=> 15

2. Determine the class limits of the fourth class interval.

30-35

Ans -> 5

3. Find the class mark of the class 45 - 50.

45 - 50.

Ans:-5

4. Determine the class size