Question 6 A random sample of weights (in carats) of sapphires in a jeweller's collection is shown. Find the mean of the sample. Classes Frequency 1-3 7 4-6 5 7-9 4 10-12 15 13-15 1 12.8 10.80 5.55 7.8
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8 = 38.4 5 * 10.8 = 54 Now, we need to find the sum of these products: 38.4 + 54 = 92.4 Show more…
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