Question

A sample of n=6 scores had a mean of m=13. if one person with a score of x=3 is removed from the sample, what is the value for the new mean?

Answer 1

The value for the new mean after removing a score of 3 from the sample is 15.

Step-by-step explanation:

To find the new mean after removing a score of 3 from the sample, we need to calculate the sum of the remaining scores and divide it by the new sample size.

Step 1: Calculate the sum of the original scores (n=6) by multiplying the mean (m=13) by the sample size: 6 * 13 = 78.

Step 2: Subtract the score that is being removed (x=3) from the sum: 78 - 3 = 75.

Step 3: Calculate the new mean by dividing the new sum (75) by the new sample size (n=5): 75 / 5 = 15.