Chi-Square Test For Goodness of Fit

Feb 3rd, 2012
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Sample problem of Chi-Square test a) What is the null hypothesis? b) What is the alternative hypothesis? c) How may degrees of freedom are there? d) What is the sample standard deviation of the difference in the test scores? e) What is the value of the test statistic?

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Chi-Square Test For Goodness of FitQ). A statistical model was built for predicting reconviction based on three years of post-prison follow up of 347 men who had been imprisoned for crimes against persons or property. It was possible to classify the prisoner as having either low risk, medium risk or high risk of re-offending. To see how useful the classification was a further 225 prisoners were studied on leaving prison. The results are shown in the table below.Risk groupLowMediumHighTotalReconvicted235053126Not reconvicted52252299Total757575225Is there an associat

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