Calculate the standard deviation and variance of the sample quantitative data shown, to two decimal places. x 1.9 26.6 4.8 19.2 8.2 12.4 26.5 Standard deviation: Variance:
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Step 1
9, 26.6, 4.8, 19.2, 8.2, 12.4, 26.5 Sum of all data = 1.9 + 26.6 + 4.8 + 19.2 + 8.2 + 12.4 + 26.5 = 99.6 Mean (x̄) = Sum of all data / Number of data points = 99.6 / 7 = 14.2286 Show more…
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