EM-2964
Mean
E Math · Secondary 4 · Medium · Mean
The table shows the heights, in cm, of 40 plants.
Height (cm): 40 < h ≤ 50, 50 < h ≤ 60, 60 < h ≤ 70, 70 < h ≤ 80, 80 < h ≤ 90
Frequency: 5, 9, 12, 9, 5
Using the midpoints of each class, find the mean height of the plants, correct to 1 decimal place.
Height (cm): 40 < h ≤ 50, 50 < h ≤ 60, 60 < h ≤ 70, 70 < h ≤ 80, 80 < h ≤ 90
Frequency: 5, 9, 12, 9, 5
Using the midpoints of each class, find the mean height of the plants, correct to 1 decimal place.
- 62.5 cm
- 64.0 cm
- 65.0 cm
- 66.5 cm
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