Question

5, 4½, 4¾, 4, 4⅛, 3¼, 4⅛, 4½, 5
what mistake does andy make on his line plot?
length of yarn
(in inches)
andy did not graph 3¼.
andy measures 9 pieces of yarn but only graphs 5 pieces.
andy draws too many xs for 4½ inches and 5 inches.
andy does not draw enough xs at 4⅛ inches.

Explanation:

First, count the data points: the given lengths are 5, $4\frac{1}{2}$, $4\frac{3}{4}$, 4, $4\frac{1}{2}$, $3\frac{3}{4}$, $4\frac{3}{4}$, $4\frac{1}{2}$, 5 (total 9 points). Now check the line plot:

• 4 inches: 1 ✔️
• $4\frac{1}{4}$ inches: 1 (not in data, error here)
• $4\frac{3}{4}$ inches: 4 ✔️
• $4\frac{1}{2}$ inches: 3 ✔️
• 5 inches: 2 ✔️

Also, the value $3\frac{3}{4}$ is present in the data but not plotted on the line plot at all.

Answer:

A. Andy did not graph $3\frac{3}{4}$.