Question

The calculated mean of 50 observations was 80 .It was later discovered that observation 19 was recorded by mistake as 91.What was the correct mean?​

Answer 1

Answer:

It was later discovered that observation 19 was recorded by mistake as 91. We have, The calculated mean of 50 observations was 80. So, the correct mean = = 78.56

Step-by-step explanation:

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Answer 2

Answer:

It was later discovered that observation 19 was recorded by mistake as 91. We have, The calculated mean of 50 observations was 80. So, the correct mean = = 78.56