1.

The following data gives the information on the observed lifetimes (in hours) of 225 electrical components: Lifetimes (in hours) 0 − 20 20 − 40 40 − 60 60 − 80 80 − 100 100 − 120 Frequency 10 35 52 61 38 29 Determine the modal lifetimes of the components.

Answer»

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

























Lifetimes (in hours)

0 − 20

20 − 40

40 − 60

60 − 80

80 − 100

100 − 120

Frequency



10

35

52

61

38

29


Determine the modal lifetimes of the components.


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