Question

in a recent survey, 640 people were asked about the length of time each week that they spent watching television. Th median time was found to be 20 hours, and the lower and upper quartiles were 15 hours and 35 hours respectively

Answer 1

This isn't a complete question. What's the goal of the problem?

Answer 2

In a recent survey, 640 people were asked about the length of time each week that they spent watching television. Th median time was found to be 20 hours, and the lower and upper quartiles were 15 hours and 35 hours respectively. The least amount of time that anyone spent was 3 hours, and the greatest amount was 60 hours.
(i) on graph paper, show these results using a fully labelled cumaltive frequency graph.
(ii) use your graph to estimate how may people watched more than 50 hours of television each week.

Answer 3

this is the full question @mathmale