Question

The points scored on a test for a sample of 38 students are summarized in the following table. Number of students Score for each student 8 points 19 11 90 80 70 Find the mean points scored. Round your answer to the nearest tenth. X Ś ?

Answer 1

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:

`mean=\frac{Total\text{ }score}{Total\text{ students}}\text{ }`

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:

`\begin{gathered} Mean=(720+1520+770)/(8+19+11) \\ \\ Mean=(3010)/(38) \\ \\ Mean=79.21 \\ \\ Mean=79.2 \end{gathered}`

Thus we can say that the mean points scored is 79.2