Daisy measured the heights of 20 plants. The table gives some information about the heights (h in cm) of the plants.
Height of plants (h)
Frequency
0 <h < 10
1
10 < h < 20
4
20 <h < 30
7
30 <h <40
2.
40 <h <50
3
50 <h < 60
3
By using the midpoints of each group, work out an estimate
for the mean height of a plant.

Based on the given data set, the mean height of a plant is 30.5 centimeters.

Given information:

The table shows the height of plant in centimeters and the number of plant that fall under each range.

The midpoints of ranges of height will be,

5, 15, 25, 35, 45, and 55.

The respective frequency of plants is,

1, 4, ,7, 2, 3, and 3.

Now, the mean height of the plants will be calculated as,

Thus, we conclude that  the mean height of the plants is 30.5.

for more details, refer to the link:

link

Step-by-step explanation:

Refer to attached

Sum of frequencies = 20

Sum of frequency x midpoint product = 610

Mean height

square pyramid

step-by-step explanation:

square prism looks like nothing like that

triangular prism has a rectangular base instead of a square base

tetrahedron has a triangular base