Finding an appropriate class width and constructing class limits

How to Determine Class Width - Round Up to Next Whole Number

How to determine the class width : Grouping data series

Frequency Distributions & Class Width

Finding class width in a frequency distribution

Identifying the class width used for a frequency distribution

Finding Class Width and Sample Size from Histogram

Finding class width, class midpoints & class boundaries

Frequency Distribution Table (class width, class limits, boundaries, midpoints) and Histogram