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I need to make a histogram of the relative frequencies of a data set. I am given the CRF, but I am confused as to how to go from the CRF to the relative frequency. Any help is appreciated thanks!

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    perhaps posting all the actual info would help? – 2017-01-26
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    It would be kind, if you would give a reply. – 2017-01-26

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Let $X(i)$ be the i-th cummulative relative frequency and $r(i)$ the i-th relative frequency. The steps to calculate the $r(i)$´s are shown below:

     X(i)    r(i)

1    X(1)    r(1)=X(1)

2    X(2)    r(2)=X(2)-X(1)

3    X(3)    r(3)=X(3)-X(2)

4    X(4)    r(4)=X(4)-X(3)

...

n    X(n)    r(n)=X(n)-X(n-1)