Answer
boundary is 16.25-18.55
midpoint is 17.4
width is 2.2
Work Step by Step
Since the class has 1 decimal place, the boundary will have 2 decimal places. Subtract 0.05 from smallest value and add 0.05 to the largest value to find the boundary.
$16.3-0.05=16.25$
$18.5+0.05=18.55$
To find the midpoint, add the upper and lower values and divide by 2.
$\frac{16.3+18.5}{2}=\frac{34.8}{2}=17.4$
To find the width, subtract the lower value from the upper value.
$18.5-16.3=2.2$
