Question

a data set includes the following test scores:75,82,62,78.The score on a retake is 96.it the retake score replaces the lowest test grade, how is the mean affected

Answer 1

The mean increased by 6.8

Explanation:

Answer 2

Increase by 8.75

Explanation:

75+82+67+72=296

296/4= 74

74 = Original Mean

75+82+96+78=331

New mean 82.75

82.75-74=8.75