Question

5 people made the following grades on the last math test: 45, 83, 45, 77, 99. Use this information to find the mean.

Answer 1

Answer:

Mean is 69.8

Median is 77

Range is 54

Step-by-step explanation:

Mean is all numbers added up, then divided by the amount of numbers.

Median is the middle number of all numbers (To find this you put all numbers in order from least amount to highest amount, then you find the most center number of the rest).

Range is the highest number subtracted from the lowest number.

Answer 2

Answer:

Mean:  69.8

Range:  54

Median:  77

Step-by-step explanation:

The mean is the average of the numbers.  The range is the largest number minus the smallest number.  The median is the middle number.

The mean is 69.8.

$\frac{45 + 83+45+77+99}{5} \\\frac{349}{5}\\69.8$

The range is 54.

99 - 45 = 54

The median is 77.

45  45  77  83  99