Consider this data set. It represents the number of tomatoes on seven tomato plants.

{6,8,6,11,8,8,9}

Click on the link to use the GeoGebra graphing calculator to calculate the standard deviation.

Round to the nearest tenth, if necessary.

Interpret the standard deviation for the data set. Use the drop-down arrows to complete the sentences.

The standard deviation for the number of tomatoes is [1.6, 4.8, 8. 3.2]. This means that about 68% of the plants had within [3.2, 4.8, 1.6, 8] tomatoes higher or lower than the mean number of tomatoes, which is [1.6, 8, 4.8, 3.2].