Question

Anvi measured the height of five plants over a three-week experimental period and obtained the following data for the final week (in cm):

15, 18, 21, 19, 20

Calculate the final average height for this group of plants. Round your answer to one decimal place.

(1 point)
Responses

18.6 cm
18.6 cm

6.0 cm
6.0 cm

13.3 cm
13.3 cm

4.2 cm

Answer 1

To calculate the final average height of the plants, you need to add all the heights together and then divide by the number of plants.

The heights of the plants are: 15 cm, 18 cm, 21 cm, 19 cm, and 20 cm.

1. **Add the heights**:
\( 15 + 18 + 21 + 19 + 20 = 93 \)

2. **Divide by the number of plants (5)**:
\( \frac{93}{5} = 18.6 \)

So, the final average height for this group of plants is **18.6 cm**.