During a quality assurance check, the actual contents (in grams) of six containers of protein powder were recorded as 1531, 1528, 1499, 1511, 1536, and 1512.

(a) Find the mean and the median of the contents.

(b) The third value was incorrectly measured and is actually

1513. Find the mean and the median of the contents again.

(c) Which measure of central tendency, the mean or the median, was affected more by the data entry error?