WHAT IS IT?

A bar graph of raw system data. Shows basic information about the data, such as central location, width of spread, and shape.

WHAT DOES IT LOOK LIKE?

Example - See Below

WHEN IS IT USED?

1. Do you have a data set of related values, either attributes (counts) or variables data (measurement)/

2. Is it important to visualize central location, shape, and spread of the data?

 

HOW IS IT MADE?

1. Select the classes.
2. Record the data.
3. Prepare the axes.
4. Draw the bar graph.
5. Study the shape.
6. Calculate the statistics.
7. Compare your histogram to the normal distribution.

PRIMARY EXAMPLES:

Primary Letter Recognition Chart
Addition Timed Test

INTERMEDIATE EXAMPLES:

JUNIOR HIGH EXAMPLES:

ADULT EXAMPLES:

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