Cumulative Frequency Diagrams And Box Plots. The data complete the cumulative frequency table and construct a cumulative frequency histogram on the grid below. Box Plots are also known as BoxandWhisker Diagrams youll see why below They are used when we are particularly interested in splitting data up into quartiles Often data will contain extreme values consider the cost of a car.
The first cumulative frequency box is simply the number 16. The upper class boundaries for this table are 35 40 45 50 and 55. See the example in Box Plots for more information.
Age A in years Cumulative f requency 20.
A bar graph B histogram C box-and-whisker plot D stem-and-leaf plot 9 Given the following data. Dec 11 2013 Here you will shown how to draw a box plot from a cumulative freqeuncy curve. Frequency Polygons and Cumulative Frequency Diagrams are useful for finding estimates for the quartiles and percentiles but are not so good at showing the spread of the data see Measures of Variation. See the example in Box Plots for more information.
