A researcher measured the lenghths, in inches, of 20 loggerhead sea turtles. she created a box plot with the data, as shown.
Lengths of loggerhead seaturtles:
|--------|---------------------------|
<--|---|----|---|----|---|--|--|---|----|----|----|--->
20 22 24 26 28 30 32 34 36 38 40
What is the interquartile rang, in inches?
To find the interquartile range (IQR), we need to first find the values of the first quartile (Q1) and the third quartile (Q3).
Looking at the box plot, we can see that Q1 is 26 inches and Q3 is 36 inches.
The IQR is calculated by subtracting Q1 from Q3.
IQR = Q3 - Q1 = 36 - 26 = 10 inches
So, the interquartile range is 10 inches.