Question

14. The mean and standard deviation of monthly salary (in Rs.) are given below for two factories A and B. [6] Factory No. of employee Average Monthly Standard deviation of salary monthly salary A 100 2500 200 B 120 2800 250 i) Which factory, A or B, pays out larger amount of monthly salary? ii) Which factory, A or B has greater variability in individual salary?​

Answer 1

Answer:

Weeklywages

(inRs.) No.ofworkers  

50−55 5  

55−60 20  

60−65 10  

65−70 10  

70−75 9  

75−80 6  

Total 60  

We consider the class intervals till 75−80 only as we are looking for the wages under 80.

∴  The number of workers getting weekly wages below Rs.80=60  

This is because 5+20+10+10+9+6 adds up to Rs60

Step-by-step explanation:

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