Can you help me with statistics?

Mathematics
Tutor: None Selected Time limit: 1 Day

Find the class midpoints. Do all of the classes have the same width? If so, what is this width? If not, what are the different class widths?

Oct 4th, 2015

Thank you for the opportunity to help you with your question!

To find the class midpoint, take the average of the class endpoints

for example 

class 0 – 4   midpoint      (0 + 4)/2  = 2

class 5 – 9  midpoint    ( 5 + 9)/2 = 4.5

Another example class 10.0 – 19.9 = (10+ 19.9)/2 = 14.95

The classes usually have the same width, but this is not essential

For example   0 -  9

                      10 -19  

                      20 – 29

                      30 – 59

(The last class has different width). You decide the width according to your data, so it will be different wdths.

     



Please let me know if you need any clarification. I'm always happy to answer your questions.
Oct 4th, 2015

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