A factory produces two types of electric lamps A and B. In an experiment relating to their life, the following results were obtained: Length of life (in hours) 500-700 700-900 900-1100 1100-1300 No. of lamps (A) No. of lamps (B) 05 04 11 30 26 12 10 08 06 1300-1500 08 Compare the variability of the life of the two types using coefficient of variation.

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A factory produces two types of electric lamps A and B. In an experiment
relating to their life, the following results were obtained:
Length of life
(in hours)
No. of lamps (A)
No. of lamps (B)
500-700
05
04
700-900
11
30
900-1100
26
12
1100-1300
10
08
1300-1500
Compare the variability of the life of the two types using coefficient of
variation.
08
06
Transcribed Image Text:A factory produces two types of electric lamps A and B. In an experiment relating to their life, the following results were obtained: Length of life (in hours) No. of lamps (A) No. of lamps (B) 500-700 05 04 700-900 11 30 900-1100 26 12 1100-1300 10 08 1300-1500 Compare the variability of the life of the two types using coefficient of variation. 08 06
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