$\"\"$

Observe the table :

Blanca $\"\"$ s cross - country times for the first $\"\"$ meets of the season.

The timings are $\"\"$ .

Find the mean :

$\"\"$

$\"\"$ (Addition of numbers)

$\"\"$ (Simplify)

Therefore, the mean is $\"\"$ .

$\"\"$

The mean is $\"\"$ .