Question

In a skating competition, the marks of judges are randomly selected to count. Then the highest and lowest marks are dropped, and the skater receives the mean of the remaining marks.

There are some of the marks that 11 judges gave a skater for a free-skating program.

6.75, 6.25, 6.50, 6.00, 5.75, 6.50, 7.25, 7.00, 6.75, 6.50, 6.25

a) Remove four marks that would lower the score the most. Calculate the new mean and median.

b) Remove four marks that could raise the mean score the most. Calculate the new mean and median.

Answer 1

What don't you understand about these problems?

Answer 2

to lower the mean, remove the highest scores.

To raise the mean, remove the lowest scores.

Answer 3

Thank you