### Home > CC2 > Chapter 1 > Lesson 1.2.1 > Problem1-61

1-61.

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

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

The mean is the average of all the lengths.

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

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

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

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

Since there are $2$ middle numbers, average, or find the mean of, the two middle numbers.

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

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