MATG 301: Inferential Statistics

Branch of statistics that allows us to make inferences about a population based on a sample.

• Descriptive Statistics

• Inferential Statistics

• Quantitative Statistics

A statement of no effect or no difference.

• Null Hypothesis (H0)

• Alternative Hypothesis (H1)

• Significance Level (alpha)

What statistical test will you use if you will compare the means of two groups when the sample size is large (n ⪰ 30) and the standard deviation is known.

• ANOVA

• T-Test

• Z-Test

This statistical tool is used to test for association between categorical variables (nominal and ordinal).

• ANOVA

• Chi-squared Test

• Regression Analysis

If the p-value is less than the significance level (p < 0.05), what will be your decision?

• reject the null hypothesis

• do not reject the null hypothesis

• reject the alternative hypothesis