Investigate two categorical variables whose relationship seem interesting. The two categorical variables, which we have chosen to investigate is gender and smoking.

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Project #2

The project states to investigate two categorical variables whose relationship seem interesting.  The two categorical variables, which we have chosen to investigate is gender and smoking.  This left us to decide on how we were going to proceed.  

The sampling frame consists of female and male students who attended John Abbott College, on full-time bases.  We know had to decide what question we would ask.

We decided to go with a simple question which would end up giving us a direct yes or

no answer.  The question, which we decided to ask, “Do you or do you not smoke?”  We took a sample size of forty students: 21 males and 19 females.  It should be noted that the larger the sample size the more reliable the results are likely to be.

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There are several types of chi-square test depending on the way the data was collected and the hypothesis being tested.  We will begin with the simplest case: a 2X2 contingency table.  When a comparison is made between one sample and another, a simple rule is that the degrees of freedom equal (number of columns minus one) X (number of rows minus one).  

For our data this gives us (2-1) X (2-1) equals 1.  The table had percentages across.  Comparison down the columns, suggest that men (33.3%) are less likely to smoke compared to women (47.4%) whom smoke. ...

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