Ex15.3, 3
An analysis of monthly wages paid to workers in two firms A and B, belonging to the same industry, gives the following results:
Which firm A or B pays larger amount as monthly wages?
Ex15.3, 3
An analysis of monthly wages paid to workers in two firms A and B, belonging to the same industry, gives the following results:
(ii) Which firm, A or B, shows greater variability in individual wages?
Variance in firm A = 100
Standard deviation in firm A =
= 100 = 102 = 10
Variance in firm B = 121
Standard deviation in firm B =
= 121 = 112 = 11
Since mean in both the firms is same, i.e., Rs.5253,
Therefore, the firm with greater standard deviation will have more variability.
Thus, the plant B has greater variability in the individual wages.

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 12 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.

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