Question

The following table gives the the distribution of ages (in years) primary school teachers, for a particular year. Find: (i) the upper limit of the class 35 – 40? (ii) the class mark of the second class. (iii) the class size. (iv) the frequency of the class interval 25-30.

Answer 1

Step-by-step explanation:

For a particular year, following is the distribution of ages (in years) of primary school teachers in a

district:

15 - 20

20 - 25

25 - 30

30 .35

35.40

40.45

45 - 50

Age (in years)

No. of Teachers

10

30

50

50

30

6

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.