- #1

Mathman2013

- 23

- 1

## Homework Statement

Hi there I have problem I hope some can help me solve.

My H0, there is no connection between people who received the new and old medication? And them getting well or not well.

I suppose to test the following data using Chi-square test in SPSS.

[tex]\pmatrix{\\\textrm{"""} & \textrm{treatment} & \textrm{New-treatment} \\\textrm{well} &10 &25\\\textrm{not-well} &15 &10 }[/tex]

I calculate my expected values by hand to be.

[tex]\pmatrix{\\\textrm{"""} & \textrm{treatment} & \textrm{New-treatment} \\\textrm{well} &14.58 &20.41\\\textrm{not-well} &10.42 &14.59 }[/tex]

## Homework Equations

## The Attempt at a Solution

I calculate my expected values by hand to be.

[tex]\pmatrix{\\\textrm{"""} & \textrm{treatment} & \textrm{New-treatment} \\\textrm{well} &14.58 &20.41\\\textrm{not-well} &10.42 &14.59 }[/tex]

and then my [tex]\chi^2 = \frac{(obs-exp)^2}{exp}=5.92[/tex] and with df = 1 and using a s-level of 0.05 and looking up in a chi-square table I get critical value of 3.84. And since 5.92>3.84, then my H0 fails.

But my question: How do I get a simular result in SPSS?

If I insert my data in data-mode and choose crosstabs and chi-square test, then I get a chi-value of only by my degree of freedom is correct.

So any idear? Or hints to a guide I can learn to get the proper result?

P.s. this is not homework, but for my own better understanding of SPSS.

cheers

MF