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4 years ago

Daisy measured the heights of 20 plants.

Mathematics

1 answer:

sergiy2304 [10]4 years ago

5 0

Answer:

30.5 cm

Step-by-step explanation:

<em>Refer to attached</em>

Height of plants (h) >> Frequency >> Midpoint >> Frequency x midpoint
0 <h < 10 >> 1 >> 5 >> 5
10 <h < 20 >> 4 >> 15 >> 60
20 <h < 30 >> 7 >> 25 >> 175
30 <h < 40 >> 2 >> 35 >> 70
40 <h < 50 >> 3 >> 45 >> 135
50 <h < 60 >> 3 >> 55 >> 165

Sum of frequencies = 20

Sum of frequency x midpoint product = 610

<u>Mean height </u>

610/20 = 30.5 cm

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