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Introduction
Introduction
Introduction
Stats Lab 13.1
One-Way ANOVA
Class Time:
Names:
Student Learning Outcome
- The student will conduct a simple one-way ANOVA test involving three variables.
Collect the Data
- Record the price per pound of eight fruits, eight vegetables, and eight breads in your local supermarket.
Fruits Vegetables Breads Table 13.12 - Explain how you could try to collect the data randomly.
Analyze the Data and Conduct a Hypothesis Test
- State the null hypothesis and the alternative hypothesis.
- Compute the following:
- Fruit
- = ______
- = ______
- n = ______
- Vegetables
- = ______
- = ______
- n = ______
- Bread
- = ______
- = ______
- n = ______
- Fruit
- Find the following:
- df(num) = ______
- df(denom) = ______
- State the approximate distribution for the test.
- Test statistic: F = ______
- Sketch a graph of this situation. Clearly label and scale the horizontal axis and shade the region(s) corresponding to the p-value.
- p-value = ______
- Test at α = 0.05. State your decision and conclusion.
-
- Decision: Why did you make this decision?
- Conclusion (write a complete sentence):
- Based on the results of your study, is there a need to investigate any of the food groups’ prices? Why or why not?