Question

the data represents the heights of eruptions by a geyser.
height of eruption (in.)
64 38 50 90
80 50 40 70
56 63 73 58
52 69 68 60
70 70 47 80
use the heights to construct a stemplot. identify the two values that are closest to the middle when the data are sorted in order from lowest to highest.
identify the two values that are closest to the middle when the data are sorted in order from lowest to highest.
the values closest to the middle are
(type whole numbers. use ascending order.)

Explanation:

Step1: Sort the data

38, 40, 47, 50, 50, 52, 53, 58, 60, 60, 63, 68, 69, 70, 70, 80, 80, 90

Step2: Find the middle - two values

There are 18 data points. For an even - numbered data set, the median is the average of the $\frac{n}{2}$th and $(\frac{n}{2}+ 1)$th ordered values. $\frac{18}{2}=9$ and $\frac{18}{2}+1 = 10$. The 9th value is 60 and the 10th value is 60.

Answer:

60, 60