Class boundary and class interval
Sir once say what is class boundary and class interval with one example table And say what is caption and box head also
The lower class limit of a class is the smallest data value that can go into the class. The upper class limit of a class is the largest data value that can go into the class. Caption is the upper part of the table, describing the columns and sub-columns, if any. Box-head is the entire upper part of the table which includes columns and sub-column numbers, unit(s) of measurement along with caption.