Question

the line plot shows how long nora read during each reading session last week. what is the total time she read during these sessions? reading times (hours)

Explanation:

Step1: Multiply time by number of sessions for each data - point

For $\frac{1}{2}$ hour: There are 2 sessions. So the total time is $\frac{1}{2}\times2 = 1$ hour.
For 1 hour: There are 4 sessions. So the total time is $1\times4=4$ hours.
For $1\frac{1}{2}$ hours: There is 1 session. So the total time is $1\frac{1}{2}\times1=\frac{3}{2}$ hours.
For 2 hours: There are 2 sessions. So the total time is $2\times2 = 4$ hours.
For $2\frac{1}{2}$ hours: There are 2 sessions. So the total time is $2\frac{1}{2}\times2=5$ hours.

Step2: Sum up all the total times

$1 + 4+\frac{3}{2}+4 + 5=\frac{2 + 8+3+8 + 10}{2}=\frac{31}{2}=15\frac{1}{2}$ hours.

Answer:

$15\frac{1}{2}$