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Nov 2010 p61 q1
2534
Anita made observations of the maximum temperature, \(t\) °C, on 50 days. Her results are summarised by \(\Sigma t = 910\) and \(\Sigma (t - \bar{t})^2 = 876\), where \(\bar{t}\) denotes the mean of the 50 observations. Calculate \(\bar{t}\) and the standard deviation of the observations.
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