Question

Andrew estimated that 300 people attended the school dance There actually 325 people who attended. What was the percent error?

Answer 1

Depends on whether you want to know the error in relation to estimation or to real situation.

Explanation:

The difference is `325-300=25`

This is `25/300xx100%~~8.3%` of the estimate, so you can say "attendance was 8.3% above the estimate"

This is also `25/325xx100%~~7.7%` of the outcome, so you can say "the expectation was 7.7% lower than what happened"

Let's say the percent error is "around 8%"....