An online retailer allows customers to rate items on a scale from −5 to 5. An item receives the scores below.
−4.75, 1.25, 3.75, −0.25, 0, 1.5, 4.5, −4.5, 3
Find the mean score. Write your answer as a decimal.
The mean score is
.
0.39
To find the mean score, you need to calculate the sum of all the scores and then divide it by the total number of scores.
Sum of all scores = (-4.75) + (1.25) + (3.75) + (-0.25) + (0) + (1.5) + (4.5) + (-4.5) + (3)
Sum of all scores = 0
Total number of scores = 9
Mean score = Sum of all scores / Total number of scores
Mean score = 0 / 9
Therefore, the mean score is 0.