Math, asked by sumankundu5424, 11 months ago

The mean of 20 observations is 13.5 .By an error one observation is recorded as -10 instead of 10. Hence the actual mean is?

Answers

Answered by ravishankarmarasu
0

Answer:

270.5

Step-by-step explanation:

x bar =13.5 n=20 Sigma x is equal to 270.5

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