What is a histogram
What is a Histogram
A histogram is a display of statistical information that uses rectangles to show the frequency of data items in successive numerical intervals of equal size. In the most common form of histogram, the independent variable is plotted along the horizontal axis and the dependent variable is plotted along the vertical axis. The data appears as colored or shaded rectangles of variable area.
how to make a Histogram
Draw a horizontal line. This will be where we denote our classes. Place evenly spaced marks along this line that correspond to the classes.Label the marks so that the scale is clear and give a name to the horizontal axis.Draw a vertical line just to the left of the lowest class.Choose a scale for the vertical axis that will accommodate the class with the highest frequency. Label the marks so that the scale is clear and give a name to the vertical axis.Construct bars for each class. The height of each bar should correspond to the frequency of the class at the base of the bar.
When are the used
they are used for nearly everything in life