Question

the graph below represents results of a survey in which students stated the number of minutes theyd spent watching tv the previous day.
tv watch time
bar graph with x - axis: time watching tv (minutes) with intervals 0 - 29, 30 - 59, 60 - 89, 90 - 119, 120 - 149, 150 - 179; y - axis: frequency (number of students) from 0 to 8
what was the least amount of time a student in this class could have spent watching tv that day?

Explanation:

Step1: Identify the first interval

The bar graph's first interval for time watching TV is 0 - 29 minutes. This interval represents the shortest time range among all the given intervals (0 - 29, 30 - 59, 60 - 89, 90 - 119, 120 - 149, 150 - 179).

Step2: Determine the least possible time

Within the interval 0 - 29 minutes, the least amount of time a student could have spent watching TV is 0 minutes (since the interval starts at 0). However, in the context of "spent watching TV the previous day", a more practical minimum within this interval is 0 minutes (or the smallest non - negative value in the interval, which is 0). But typically, when considering such survey data, the lower bound of the interval is the minimum possible value for that category. So the least amount of time is in the 0 - 29 minute interval, and the minimum value in that interval is 0 minutes (or the start of the interval, so the least possible time is 0 minutes, but if we consider that they spent some time, the minimum is just above 0, but the interval is 0 - 29, so the least is 0 minutes).

Answer:

0 minutes (or within the 0 - 29 minute interval, so the least possible time is 0 minutes)