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I am new to statistics and would really appreciate help. The people within the groups are different - how do I compare the percentages to see if there is a statistical significance between the groups that had training and between the group that did not

It looks something like this:

group 1           had training and worked
age group    number of tasks         percentage

20-25             40                  40
26-30             30                  30
31-35             30                  30 

group 2       did not have training and worked
age group    number of tasks         percentage

20-25             50                     50
26-30             10                     10
31-35             40                     40
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  • $\begingroup$ A t-test isn't really suitable here (you mentioned it in your original tags). You probably want a chi-squared test for homogeneity of proportions (which will be equivalent to a test of independence because of the conditioning on both margins in the chi-square). This looks like routine bookwork -- is this for some class, or other form of study (even on your own)? $\endgroup$
    – Glen_b
    Sep 1, 2014 at 3:02
  • $\begingroup$ its for some research but gor confidentiality reasons could not disclose the exact nature $\endgroup$
    – Sam
    Sep 1, 2014 at 4:31
  • $\begingroup$ thank you very much for the response. the statistician does not work on laborday and i would also like to learn about this matter $\endgroup$
    – Sam
    Sep 1, 2014 at 4:31
  • $\begingroup$ "the statistician does not work on laborday" Is this some parochial reference? CV is an international site! $\endgroup$
    – Nick Cox
    Sep 1, 2014 at 12:45
  • $\begingroup$ hi Nick, nope was just the way things were. $\endgroup$
    – Sam
    Dec 10, 2014 at 7:28

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