Question

what is the range of this data?
0 ≤ y ≤ 15
0 ≤ y ≤ 45
18 ≤ y ≤ 45
18 < y < 50

Explanation:

Step1: Recall the definition of range

The range of a data set is the difference between the maximum and minimum values. Here, we need to find the minimum and maximum \( y - \) values (since \( y \) - axis represents the "Percent of Households with at - least Four Cell Phones").

Step2: Identify the minimum and maximum \( y \) - values from the graph

Looking at the \( y \) - axis (vertical axis), the lowest point on the graph (at \( x = 0\)) has a \( y \) - value of \( 18\). The highest point on the graph (at \( x=16\)) has a \( y \) - value of \( 45\).

Answer:

\(18\leq y\leq45\)