Can take several forms including grouped, deviation, stacked, combination, or paired.

Bar charts can take several forms including grouped, deviation, stacked, combination or paired. 

A bar chart could be a chart that uses bars to indicate comparisons between classes of knowledge. The bars is either horizontal or vertical. Bar charts with vertical bars are typically referred to as vertical bar charts.

This is what i did 45-5=4040÷4=10so there are 10 white marbles but am not sure is just a question that am not sure