I have not an idea how to work this problem, help isappreciated! Use the followi

Question

I have not an idea how to work this problem, help isappreciated! Use the following frequency distribution to answer thequestion below: ClassBoundaries         Frequency    1--4                              2    5--8                              5    9--12                            7    13--16                         10    17---20                         2 How many values are below 12.5? I have not an idea how to work this problem, help isappreciated! Use the following frequency distribution to answer thequestion below: ClassBoundaries         Frequency    1--4                              2    5--8                              5    9--12                            7    13--16                         10    17---20                         2 How many values are below 12.5?

Explanation / Answer

we need to make the class continuos first by subtracting 0.5from the lower limit of the class and adding 0.5 to the upper limitof the class as follows: Class Boundaries class intervals   Frequency 1-4 0.5-4.5 2 5-8 4.5-8.5 5 9-12 8.5-12.5 7 13-16 12.5-16.5 10 17-20 16.5-20.5 2 Class Boundaries class intervals   Frequency 1-4 0.5-4.5 2 5-8 4.5-8.5 5 9-12 8.5-12.5 7 13-16 12.5-16.5 10 17-20 16.5-20.5 2 Class Boundaries class intervals   Frequency 1-4 0.5-4.5 2 5-8 4.5-8.5 5 9-12 8.5-12.5 7 13-16 12.5-16.5 10 17-20 16.5-20.5 2

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