Question

The following data set represents the scores (out of 100 points) for students in Mr.Long's biology class on the first test.94 78 79 97 95 848082 94 92 88 88 9972What is the mean test score for the class? (Round your answer to the nearest tenth,if necessary.)

Answer 1

Given:

The following data set represents the scores (out of 100 points).

94 78 79 97 95 84 80

82 94 92 88 88 99 72

We will find the mean of the data as follows:

$mean=\frac{sum\text{ }of\text{ }the\text{ }dat\text{ }set}{numer\text{ }of\text{ }the\text{ }data\text{ }set}$

We will find the sum of the scores:

$sum=94+78+79+97+95+84+80+82+94+92+88+88+99+72=1222$

And the number of the dataset = 14

So, the mean will be as follows:

$mean=\frac{1222}{14}=87.2857$

Rounding to the nearest tenth

So, the answer will be: The mean = 87.3