Answer :

Given that, mean of 12 numbers = 48

Mean can be given by

Where, ∑x = Sum of all observations

& n = Total number of observations

Here, Mean = 48 and n = 12.

So,

⇒

⇒ ∑x = 48 × 12

⇒ ∑x = 576

We have sum of all observations = 576

If 4 is multiplied by each of the 12 numbers, then the new sum of all observations = 576 × 4

⇒ New sum of all observations = 2304

Now, we have fresh data: ∑x’ = 2304, n = 12

⇒ New mean = 192

Thus, new mean of the observation is 192.

Rate this question :

The mean of 15 nuTamilnadu Board Math Term-II

The mean of 20 nuTamilnadu Board Math Term-II

The mean of 5 numTamilnadu Board Math Term-II

The arithmetic meTamilnadu Board Math Term-II

The mode of the dTamilnadu Board Math Term-II

| The mean of theTamilnadu Board Math Term-II

The following tabTamilnadu Board Math Term-II

The mean of firstTamilnadu Board Math Term-II

The median of 2,7Tamilnadu Board Math Term-II

Find the mean, moTamilnadu Board Math Term-II