math
posted by Tashanna .
construct a frequency and a cumulative frequeny histogram based on the table below.
the range for the table are:110,1120,2130,4150
The frequency is 2, 3 , 4,4,7,
I need to find the cumulative frequency then graph it , I know how to graph it
You have 4 ranges for scores, but 5 frequencies. What category (range) does the extra one go into (3140)? In statistics, you need to pay attention to these details.
If they are in order, the first bar in the histogram for a cumulative frequency will have a value of 2, the second 5, the third 9, and so on.
I searched Google under the key words "cumulative histogram" to get these possible sources:
http://www.itl.nist.gov/div898/handbook/eda/section3/histogra.htm
http://www.itl.nist.gov/div898/software/dataplot/refman1/ch2/histogra.pdf
In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search.
I hope this helps. Thanks for asking.
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