CAIE S2 2022 March — Question 1

Exam BoardCAIE
ModuleS2 (Statistics 2)
Year2022
SessionMarch
TopicMeasures of Location and Spread
TypeStandard unbiased estimates calculation
1 The lengths, in millimetres, of a random sample of 12 rods made by a certain machine are as follows.
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199
  1. Find unbiased estimates of the population mean and variance.
  2. Give a statistical reason why these estimates may not be reliable.
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