I'll do the first one the rest are done in the same way:

Given that the mean is 4 so 4=(5+1+6+3+4+x)/6, 24=19+x, so x=5

Hope this helps

Jim

Jim S.

tutor

Nikita,

To find the mean of a set of numbers you add the numbers and divide by the number of numbers. So in question 3 you divide by 6 again.

The median is 28 which is the middle of the set of ordered numbers. The ordered set is 21 24 x 30 30 32 the median is the average of the two middle numbers so (x+30)/2=28, so x+30=56, x=26. You should look up the definition of the median to be sure you know how to find it for odd and even sets of numbers.

Good luck on your quiz

Jim

Jim

Report

05/12/15

Nikita P.

05/12/15