Math, asked by syedumar0005, 11 months ago

100-120
13.Find the Mean lifetime of the components by step deviation method
Lifetimes 0-20 20-40 40-60 60-80 80-100
(in hrs)
Frequency 10
52
61
38
35
29

Answers

Answered by vermavineeta1988

0

Answer:

-20 is the answer

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