CAIE S1 2016 March — Question 1

Exam BoardCAIE
ModuleS1 (Statistics 1)
Year2016
SessionMarch
TopicMeasures of Location and Spread
TypeCalculate mean from coded sums
1 For 10 values of \(x\) the mean is 86.2 and \(\Sigma ( x - a ) = 362\). Find the value of
  1. \(\Sigma x\),
  2. the constant \(a\).
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