Question

The ages of the 40 teachers in school are listed here :

27, 35, 26, 33, 24, 43, 34, 20, 47, 56,

42, 49, 57, 34, 54, 29, 39, 50, 21, 37,

58, 30, 28, 26, 20, 34, 33, 27, 41, 59,

47, 62, 52, 29, 30, 25, 37, 29, 44, 22.

a) Make a grouped frequency distribution table using class intervals

20-30, 30-40, 40-50, 50-60, and so on.

b) Which class interval do most of the teachers belong to?

c) How many teachers are less than 40 years of age?​

Answer 1

By arranging the numbers in ascending order We get 32, 34, 36, 37, 4, 44, 47, 50, 53, 54 We know that n = 10 which is even So we get Median = ½ {(n/2)th term + (n/2 + 1)th term} It can be written as Median = ½ {5th term + 6th term) By substituting the values Median = ½ (40 + 44) On further calculation Median = ½ (84) We get Median = 42 Therefore, the median age is 42 years.Read more on Sarthaks.com - https://www.sarthaks.com/724430/the-ages-in-years-of-10-teachers-in-a-school-are-32-44-53-47-37-54-34-36-40-50-find-the-median-age

Answer 2

Answer:

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