OCR S2 2010 January — Question 1

Exam BoardOCR
ModuleS2 (Statistics 2)
Year2010
SessionJanuary
TopicMeasures of Location and Spread
TypeStandard unbiased estimates calculation
1 The values of 5 independent observations from a population can be summarised by $$\Sigma x = 75.8 , \quad \Sigma x ^ { 2 } = 1154.58 .$$ Find unbiased estimates of the population mean and variance.
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