Question

Rosa is growing pea plants for a science experiment. The dot plot shows the heights of her 11 plants. Use the dot plot to determine each measure of center or variability. 5. Mean 6. Median 7. Range

Answer 1

From the dot plot, the 11 heights recorded are:

11, 12, 12, 12, 13, 14, 17, 18, 18, 19, 19

$\begin{gathered} (5)\text{ Mean = }\frac{11+12+12+12+13+14+17+18+18+19+19}{11}\text{ =}\frac{165}{11}\text{ = 15}cm \\ \\ (6)Median=14\operatorname{cm} \\ \\ (7)\text{ Range = Highest height - lowest height = 19cm -}11\operatorname{cm}\text{ = 8cm} \\ \\ \end{gathered}$