the calculated mean of 50 observations was 80. was later discover that observation 19 was recorded by mistake as 91. what was the correct mean?
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n=50
incorrect mean=80
correct mean=19
incorrect mean=91
correct=n×incorrect +. right. -. wrong
mean. mean. observation observation/n
=50×80+19-91/50
=328/50 =6.56
thus, 6.56 is the correct mean
incorrect mean=80
correct mean=19
incorrect mean=91
correct=n×incorrect +. right. -. wrong
mean. mean. observation observation/n
=50×80+19-91/50
=328/50 =6.56
thus, 6.56 is the correct mean
BhaveshCharde:
this is wrong answer
right ans is ?
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