A frequency distribution of funds collected by 120 workers in a company for the drought affected people are given in the following table. Find the mean of the funds by 'step deviation' method.
Fund (Rupees) No. of workers
0-500 : 35
500-1000 : 28
1000-1500 : 32
1500-2000 : 15
2000-2500 : 10
Answers
Answer:
mean of the funds by 'step deviation = 987.5
Step-by-step explanation:
Class Frequency Mean u= (Mean - 1250)/500 Frequency * u
0- 500 35 250 -2 -70
500-1000 28 750 -1 -28
1000-1500 32 1250 0 0
1500-2000 15 1750 1 15
2000-2500 10 2250 2 20
Total 120 -63
Mean = 1250 + (-63/120) * 500
= 1250 - 262.5
= 987.5
mean of the funds by 'step deviation = 987.5
Answer:
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