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	total
4 - 8 hours	19	16	35
8 - 12 hours	13	17	30
more than 12 hours	14	15	29
total	56	54	110

how many total students were surveyed?

Explanation:

Step1: Analyze the table

The table has a "Total" column at the bottom - right corner which gives the total number of students surveyed.

Answer:

110