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# Chi-Square Test for Independence of Two Groups

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A study is designed to investigate whether there is a difference in response to various treatments for patients with chronic pain. The data is shown below. Is there a statistically significant difference in the proportions of patients who show improvement? Between treatment 1 and 2? Use a 5% level of significance.

Critical value =
_________// Symptoms worsened // No effect // Symptoms improved // Total
Treatment // 1 // 22 // 14 // 14 // 50
Treatment // 2 // 14 // 15 // 21 // 50

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The solution gived detailed steps on performing a chi-square test for independence of two groups. All formula and calcuations are shown and explained.

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A study is designed to investigate whether there is a difference in response to various treatments I patients with chronic pain. The data are shown below. I there statistically significant difference in the proportions of patients who show improvement. Between treatment 1 ...

##### Measures of Central Tendency

This quiz evaluates the students understanding of the measures of central tendency seen in statistics. This quiz is specifically designed to incorporate the measures of central tendency as they relate to psychological research.