Question

the mean of 21 observations is 59 . If each no is multiplied by 4. The new mean is
​

Answer 1

Answer:

Given the mean of

121

numbers is

59

.

Then sum of the numbers is

121

×

59

.

Now if we multiply each numbers by

4

then the sum of the numbers

=

4

×

121

×

59

.

Then mean of the new numbers will be

=

4

×

121

×

59

59

=

4

×

59

=

236

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