1 year ago

#344670

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PPchs

Comparing two groups with categorical data

I am a complete newb - I hope I have framed my question well. I will try to clarify anything that is unclear or expressed poorly. Here goes...

I have two groups - New Teachers and Experienced Teachers who have answered survey questions regarding classroom incidents. Their responses have been grouped into the categories of Often/Sometimes and Rarely/Never.

The data for Question 1 look like this:

Oft / Smtimes Rare / Never Total
New 117 64 181
Exprnced 55 45 100
Total 172 109 281

For each question with results like this, I want to know if there is a significant difference between the two groups. As the data is all categorical I believe this to be a chi-square test and have put the following code into r to do this:

Question1 = matrix ( c(55, 117, 45, 64), nrow=2, ncol=2, byrow=TRUE)

chisq.test(Question1)

Can anyone please advise if this is the correct test and whether the code I have put in r is performing the test appropriately?

r

chi-squared

categorical

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