CAIE S2 2018 June — Question 1

Exam BoardCAIE
ModuleS2 (Statistics 2)
Year2018
SessionJune
TopicMeasures of Location and Spread
TypeStandard unbiased estimates calculation
1 A random sample of 75 values of a variable \(X\) gave the following results. $$n = 75 \quad \Sigma x = 153.2 \quad \Sigma x ^ { 2 } = 340.24$$ Find unbiased estimates for the population mean and variance of \(X\).
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