Am of 100 observation is 2416 two observation wer wrongly taken as 2117 and 1468 instead of 2711and 1846 . find the correct am
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Step-by-step explanation:
Number of observations=100
Mean=40
Sum of values of observations=40×100=4000
30 and 27 noted instead of 3 and 72
Correct sum=4000−30−27+3+72=3982
Correct mean=1003982=39.82
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