Q. 24.2( 222 Votes )

The following data gives the information on the observed lifetimes (in hours) of 225 electrical components:
Determine the modal lifetimes of the components

Answer :

As per the question:

Modal class = 60-80

l = 60

h = 20

f1 = 61

f0 = 52

f2 = 38

Or Mode = 60 + 5.625

or Mode = 65.62

Thus, the modal lifetime of 225 electrical components is 65.62 hours

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