Question

a random sample of students were surveyed as to how much non - school screen time they had each week (for purposes of the survey, screen time was defined as: time spent online, on social media, watching tv, or playing video games) and if their grade average was above or below 80.
screen time

	above	below
4 - 8 hours	20	12
8 - 12 hours	10	18
more than 12 hours	16	18

how many students who spend 4 - 8 hours a week on screens reported a grade average above 80?

Explanation:

Step1: Locate the row and column

Locate the row for "4 - 8 hours" and the column for "above".

Step2: Read the value

The value at the intersection of the "4 - 8 hours" row and "above" column is 20.

Answer:

20