Adam is measuring the heights in cm of his tomato plants. [Height (cm) Frequency: 140 < h ≤ 150 7; 150 < h ≤ 160 10; 160 < h ≤ 170 15; 170 < h ≤ 180 19; 180 < h ≤ 200 9;] Estimate the standard deviation.
Added by Richard M.
Step 1
Find the mean height: To find the mean height, we need to multiply each height by its frequency, add up the products, and divide by the total frequency: Mean height = (7*145 + 10*155 + 15*165 + 19*175 + 9*190) / (7+10+15+19+9) = 169.2 cm Show more…
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