Question

are the data reported or measured?
a. the data appears to be measured. the heights occur with roughly the same frequency.
b. the data appears to be measured. certain heights occur a disproportionate number of times.
c. the data appears to be reported. certain heights occur a disproportionate number of times.
d. the data appears to be reported. the heights occur with roughly the same frequency.

Explanation:

When data is measured, we expect a more natural - looking distribution which may or may not be uniform. When data is reported, there can be biases such that certain values occur disproportionately often due to factors like rounding or ease of reporting. If certain heights occur a disproportionate number of times, it is more likely that the data is reported rather than measured.

Answer:

C. The data appears to be reported. Certain heights occur a disproportionate number of times.