Question

Average of 11 scores is 10.5 .If one score 9 is deleted, then find the average of the remaining scores. ​

Answer 1

1039.5 scores is average

Answer 2

The average of the remaing scores = 10.65

Average of 11 scores = 10.5

Average = sum of the 11 scores / 11

Sum of the scores = 10.5 × 11 = 115.5

If score of 9 is deleted from the total then -

Sum of the scores remaining = 115.5 -9 =106.5

The total number of scores = 10

New average of scores = sum of the scores remaining /10

= 106.5 / 10

= 10.65

The new average is equal to 10.65