Deandre predicted that he would sell 37 pairs of shoes while working at the shoe store this weekend. He actually sold 28 pairs of shoes. What was the percent error of his prediction?
Responses
A 24.32%24.32%
B 26.38%26.38%
C 31.5%31.5%
D 32.14%32.14%
To calculate the percent error, we use the formula:
Percent Error = [(|Predicted Value - Actual Value|) / Actual Value] x 100
Plugging in the values:
Percent Error = [(|37 - 28|) / 28] x 100
Percent Error = [(9) / 28] x 100
Percent Error = 0.3214 x 100
Percent Error = 32.14%
Therefore, the percent error of Deandre's prediction was 32.14%, which is option D.