In science class, Oliver estimates the volume of a sample to be 52 mL. The actual volume of the sample is 56 ml. Find the percent error of Oliver's estimate. Round your answer to the nearest tenth.

Kilgore trout creates a new scale to diagnose depression. however, his scale only assesses one symptom of depression while ignoring others. which of the following is his new scale most likely lacking? a) test-retest reliability b) discriminant validity c) criterion validity d) alternate-forms reliability e) content validity f) none of the above