CPM Homework Help : CC2 Problem 1-61

Find the mean and median for the lengths of the jumping frogs’ bodies shown below (the lengths are in centimeters).

$20.3$ , $12.5$ , $7.6$ , $13.9$ , $9.2$ , $21.7$ , $7.6$ , $17.5$ , $15.6$ , $14.1$

Step 1:

The mean is the average of all the lengths.

Hint:

Add all the lengths of the jumping frogs together and divide that sum by the number of lengths.

Partial Answer 1:

$\frac{140}{10}=14$

Step 2:

The median is the middle number when the lengths are arranged numerically.

Hint 2:

$7.6,7.6,9.2,12.5,13.9,14.1,15.6,17.5,20.3,21$

More Help:

Since there are $2$ middle numbers, average, or find the mean of, the two middle numbers.
$7.6,7.6,9.2,12.5,13.9,14.1,15.6,17.5,20.3,21$

Partial Answer 2:

$\frac{13.9+14.1}{2}=14$