Question

The box plot show the price of textbooks at a local high school. What range describe the middle 50% if the price (p) of the textbooks?

Answer 1

See Explanation

Explanation:

The question is incomplete, as the box plot is not attached.

However, the interpretation of the question is to determine the inter-quartile range (IQR) ; this represents the middle 50% of scores

To answer this question, I will make use of the attached box plot.

IQR is calculated as:

and
are represented by the vertical edges of the rectangle in the box plot. [See attachment]

Reading
and
, we have:

The IQR is:

Hence, the range that describes the middle 50% of the attached plot is 13