Question

Vertical rectangles representing class frequencies in a frequency distribution is called _______. (Fill in the blank by choosing correct option)
1) Histogram
2) Bar diagram
3) Pie diagram
4) Frequency polygon

Answer 1

Answer will be 2) Bar diagram as per my view

Answer 2

Vertical rectangles representing class frequencies in a frequency distribution is called histogram.

A histogram is an area diagram. A set of rectangles with bases along the intervals between class boundaries and with areas comparative to the frequencies in the corresponding classes define a histogram.

In such a representation the rectangles are found all adjacent, since the bases cover the intervals between class boundaries.