Question

in a histogram, frequencies are represented by

b. bars

d. leaves

c. portions of the pie

a. lines

Explanation:

A histogram is a graphical display of data using bars of different heights to show frequencies of different intervals or classes. Bars represent frequencies in a histogram. Lines are not used for frequency - representation in histograms. Leaves are part of a stem - and - leaf plot, not a histogram. Portions of a pie are used in a pie chart for showing proportions, not in a histogram for frequencies.

Answer:

b. Bars