The interquartile range (iqr) is defined as the difference between the first and third quartiles (q3 − q1). what feature of the box-and-whisker plot does the iqr describe?
a. the median of the data set
b. the full length of the box-and-whisker plot
c. the length of the box of the box-and-whisker plot
d. the average length of the two whiskers of the box-and-whisker plot

answer: option a.

step-by-step explanation:

you know that the quadrilateral opqr ( a four sided figure) is inscribed in circle. this means that all its vertices are on the circle.

then, by definition, the opposite angles of the quadrilateral are supplementary, this means that the sum of their measures is 180 degrees.

you can observe in the figure that the angles ∠opq   and the angle ∠orq   are opposite, therefore:

then, can be used to d to calculate the measure of ∠opq

215.92 dollars is the answer