1. The heights, in metres, of trees in a woodlot are as follows: \( 18.0|21.3 / 17.1| 23.5|19.8| 17.9|17.0| 21.5|19.2| 19.0|20.6| 19.5 \) a) Calculate the mean, median, and mode tree height. b) Determine the range of this data set. 2. Which measure of central tendency best describes the data in question 1? Explain.

\( 0,35 dl \)

1. Data collected by the school shows that the mean SOL score for Geometry is 435 . If the data is normally distributed and the standard deviation is found to be 25 , what percentage of students will earn above - a 475 ?

16. La siguiente lista muestra las edades de un grupo de 10 adultos: \( 20-30-30-30-35-35-40-40-50-60 \) ¿Cuánto es el rango de estas edades?

\begin{tabular}{l}\hline Translation \\ Reflection \\ Rotation \\ None of these \\ \hline\end{tabular}

A certain amount of money is shared in the ratio of 2:3:9. If the difference between the second and the last shares is \( \$ 60 \), then the amount of money shared is