Finite Math
posted by caylin .
The weekly takehome pay (in dollars) for 20 graduate teaching assistants at University Z is as follows:
500.75, 217.43,488.25, 405.78
485.46, 495.48, 370.75, 435.40
479.65, 482.56, 470.28, 489.90
382.50, 500.75, 465.32, 481.25
506.43, 225.50, 504.38, 179.25
a. find the mean, median, and midrange weekly takehome pay for the assistants.
b. Which of these measures of central tendency is best represents typical weekly takehome pay for the assistants? explain.

Mean = (sum of scores)/number of scores
To find median, arrange scores in order of value. The median is that point which defines the higher 50% from the lower 50%.
Midrange = highest scorelowest score/2
The most central of these three measures (value in between the other two) would be the best measure of central tendency. 
MIDRANGE actually = lowest + highest / 2