SOLUTION:
Step 1:
In this question, we are given that:
A group of students were asked how many hours they worked per day.
The results are shown below:
Number of HoursFrequency Fi Xi
2 9 18
3 3 9
4 9 36
5 8 40
6 3 18
7 10 70
Total: 42 191
Step 2:
The mean for the number of hours per student can be calculated thus:
[tex]\begin{gathered} Mean\text{ = }\frac{191}{42}\text{ = 4.547619048} \\ \text{Mean }\approx\text{ 4.55 (to the hundredth)} \end{gathered}[/tex]Step 3:
The median for the number of hours can be calculated thus:
[tex]\frac{42}{2}\text{ = 21 st number lies on frequency 9 which corr}esponds\text{ to 4}[/tex]From the solution, we can see that the median = 4.00
