Given:
We're given the data for the number of students and the Score for each student.
To find:
The mean points scored
Step-by-step solution:
We know that:
The relation to calculate the mean of any data:
[tex]mean=\frac{Total\text{ }score}{Total\text{ students}}\text{ }[/tex]
The Total score of Row 1 = 90 × 8 = 720
The Total score of Row 2 = 80 × 19 = 1520
The Total score of Row 3 = 70 × 11 = 770
Thus, putting the values in the formula:
[tex]\begin{gathered} Mean=\frac{720+1520+770}{8+19+11} \\ \\ Mean=\frac{3010}{38} \\ \\ Mean=79.21 \\ \\ Mean=79.2 \end{gathered}[/tex]
Thus we can say that the mean points scored is 79.2
