What is the range if times that the middle 50% of sophomores spend on homework per night?

Step-by-step explanation:

Another way of stating this problem is find the Interquartile Range which is

Quartile 3 - Quartile 1.

for finding the midpoint of any given 2 pair of points simply add the respective x coordinates with other x coordinate and the y coordinate with other y coordinate and divide them by 2

in your question it will be :

(3+1)/2 for the x coordinate of mid point i.e 2

[8+(-4)]/2 for the y coordinate of midpoint i.e 2

so coordinates of mid point of points (3,8) and (1,-4) will be (2,2)

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