Question

31) Lifetime (In Hours)
0-200 200-400 400-600 600-800 800-1000 1000-1200
9
ch-14
Frequency
35
50
38
32
61
The above data gives the information on the observed lifetimes (in hours) of
225 electrical components. Find the mean. with direct method and assumed mean method with direct method and assumed mean method​

Answer 1

Answer:

31) Lifetime (In Hours)

0-200 200-400 400-600 600-800 800-1000 1000-1200

9

ch-14

Frequency

35

50

38

32

61

The above data gives the information on the observed lifetimes (in hours) of

225 electrical components. Find the mean. with direct method and assumed mean method with direct method and assumed mean method

Answer 2

Answer:

31) Lifetime (In Hours)

0-200 200-400 400-600 600-800 800-1000 1000-1200

9

ch-14

Frequency

35

50

38

32

61

The above data gives the information on the observed lifetimes (in hours) of

225 electrical components. Find the mean. with direct method and assumed mean method with direct method and assumed mean method