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Calculate $\bar{t}$ and the standard deviation for the observations.
Mathematics 9709 · AS & A Level · Sampling and estimation
Sampling and estimation — practice question
Anita recorded the maximum temperature, $t\,^{\circ}\text{C}$, on 50 days. Her data are summarised by $\sum t = 910$ and $\sum (t-\bar{t})^2 = 876$, where $\bar{t}$ is the mean of the 50 readings.