Answer
Lower class limit for the first class: 6.00
Class width: 3.00
Work Step by Step
6.00 is slightly lower than 6.37, the smallest volume observed in the sample.
Largest volume: 23.59
Smallest volume: 6.37
Number of classes: 6
$Class~width\approx\frac{23.59-6.37}{6}\approx3.00$
See the Guidelines on page 86.
