Question

An online retailer allows customers to rate items on a scale from −5 to 5. An item receives the scores −1.75, −1, 4.25, 3.75, 1, −4.75, and 2. Find the mean score. Write your answer as a decimal.

Answer 1

mean = 0.5

Explanation:

The mean of a set of data is calculated as

mean =
`(sum)/(count)`

=
`(-1.75-1+4.25+3.75+1-4.75+2)/(7)`

=
`(3.5)/(7)`

= 0.5