Answer:
Histograms are bar graphs that take many data points and group them into manageable portions. Gather the data, create a title that identifies the population or sample, name the vertical scale which will identify the frequency of the various classes, name a horizontal scale to identify the variables you are counting. Create the classes which are the groups of many single data points. Each class is represented by a bar in the graph. To make them totally correct, the bars must touch, there is a modal class, a mean and a median. The modal class is the class with the most frequency of data points. The mean is the average of all samples added then divided by the number of samples (You will also have a population mean, usually denoted by ยต which is the average across the entire population, not just the sample.) The median is the exact middle of the sampled data. Create the bar graph by counting each data point in the individual classes, labeling the graph and drawing the bars to represent those classes.