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# QMS202 Quiz: QMS 202 QUiz # 2 cheat sheet.docx

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Ryerson University

Quantitative Methods

QMS 202

Clare Chua

Winter

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[ i. If the p-value is less than alpha , then reject o H ;
ii. If the p-value is more than alpha , then do not reject o H ]
There are two possible business conclusions:
i. Conclude that there is enough evidence to support the alternative hypothesis. – Reject Ho
ii. Conclude that there is not enough evidence to support the alternative hypothesis. – Do Not Reject Ho
Null Hypothesis : A statement about the value of a population parameter o H
Alternative Hypothesis : -The opposite of the null hypothesis A H
1.Conduct a Chi-Square Test for the difference between two proportions
2. Conduct a Chi-Square Test for the difference among more than two proportions
3. Conduct a Chi-Square Test of Independence
Characteristic of chi square test
2. It is positively skewed
3. It is always non-negative value
4. It has only one parameter, called the degrees of freedom. The shape of a Chi-Square distribution curve
is skewed to the right for small df and becomes symmetric for large df. (There is a family of Chi-Square
distributions)
2. To use ANOVA, we assume the following:
i. The populations follow a normal distribution.
ii. The populations have equal s

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