The temperature deviations from the average (in ∘C) recorded in a city over 12 consecutive days were:
−1.5,0.3,1.2,−0.8,0.0,1.7,−1.1,0.9,−0.2,1.4,−0.9,0.0.
Solve the following.
(i) Compute the mean temperature deviation.
(ii) Determine the variance of the deviations.
(iii) Hence find the standard deviation, correct to two decimal places.