91Ó°ÊÓ

Determine the standard deviation from the mean of the set of numbers: \(\\{5,6,8,4,10,3\\}\) correct to 4 significant figures.

Determine the numbers contained in the (a) 41 st to 50 th percentile group, and (b) eighth decile group of the set of numbers shown below: \(\begin{array}{llllllllll}14 & 22 & 17 & 21 & 30 & 28 & 37 & 7 & 23 & 32 \\\ 24 & 17 & 20 & 22 & 27 & 19 & 26 & 21 & 15 & 29\end{array}\)