Answer
Mean:63
Median: 52
Mode: N/A
Work Step by Step
The mean is the average of the data points:
$(75+38+43+120+65+48+52)/7 = 63$
The median is given by the middle data points. Order the numbers from least to greatest, and cross out the greatest and the least number. Repeat this process until you obtain the median, which is 52.
The mode is the most commonly-occurring value in the set. Here, each value occurs exactly once, so there is no mode.