Arithmetic mean of 9 observations is calculated as 38 but in doing so and observation 27 is mistaken for 72 find the actual mean of the data
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5 is correct i think so.....
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9
Answer:
hey!!
Step-by-step explanation:
mean=sum of observations/ total observations
38=sum/9
38×9=sum
342=sum
If a number is mistakenly written as 72 then 45 should be added to the sum
sum=342
actual sum should be :
342+45
=387
mean=sum/total observations
=387/9
= 43
:0
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