Heights (in cm) of 40 plants in a Kerala nursery: 50-60 (5), 60-70 (8), 70-80 (15), 80-90 (9), 90-100 (3). Compute the mode of the heights and give the answer in cm.
Class 10Mode of Grouped DataStatistics and Probability
A75.38
B72.50
C73.18
D70.91
Step-by-Step Solution
Modal class 70-80: l=70,f1=15,f0=8,f2=9,h=10. Mode =70+2×15−8−915−8∗10=70+137∗10=70+5.38=75.38.
Answer: A) 75.38
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