what is a bar chart and telle the uses of it
Answers
A bar chart uses bars to show comparisons between categories of data. These bars can be displayed horizontally or vertically. A bar graph will always have two axis. One axis will generally have numerical values, and the other will describe the types of categories being compared. Bar charts can be very effective if properly constructed.Use the horizontal axis to represent time and the vertical axis to represent units or growth-related variables. Vertical bars are generally used to time series and for quantitative classification. Horizontal bars are less often used. If neither variable is time-related, either format can be used. A computer charting program easily generates charts. If you are preparing a bar chart by hand, leave space between the bars equal to at least half the width of the bar.