Question

18. For a particular year, following is the distribution of ages (in years) of primary school
teachers in a district:
20 - 25
Age (in Years)
25 - 30
30 - 35
35 - 40
40 - 45
45 - 50
No. of Teachers
20
48
52
35
6
4
a. The lower limit of first class interval.
i) 10
15
20
35
iv)
52
b. How many teachers of age below 35 years.
i)
ü) 48
102
iv) 120
c. Find the class mark of the class 45 - 50.
i)
ii)
45
50
47.5
45.7
iv)
d. If the total number of teachers is 45, then find the age group.​

Answer 1

Answer:

sorry i don't know the answer

Answer 2

Step-by-step explanation:

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