# Lab_09 - b Define the null hypothesis(In terms of the means...

This preview shows page 1. Sign up to view the full content.

BCS 200 Lab # 9 Analysis of Variance (ANOVA) Due: Friday, Dec. 15 In this lab you will use Excel to perform a one-way analysis of variance and write a brief report on your findings in Word. The problem: Researchers at Purdue University conducted an experiment to compare three methods of teaching reading. Students were randomly assigned to one of the three teaching methods, and their reading comprehension was tested after they received the instruction. The test scores for students assigned to each teaching method are given in BCS200_lab9.xls. You should use the One-way Analysis of Variance tool in the Data analysis toolbox to run a one-way analysis of variance on the data to determine if there was a significant difference between the three teaching methods. The assignment: Write a report in which you a. Summarize the goal of the analysis.
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: b. Define the null hypothesis (In terms of the means of the three groups). c. Summarize the data by calculating the means and standard errors of the three groups. Plot the means them as a bar plot with error bars. Make sure to include captions and describe the results in the body of your text. d. In the body of your text, specify the results of running the ANOVA as an F-ratio and conclude whether or not you can reject the Null hypothesis. Describe your conclusions about the effectiveness of the different teaching methods. Be careful about exactly what the ANOVA allows you to conclude. e. Include in your report a table listing the Sums of squares, the F-ratio and p-value for the ANOVA. This is generated when you run the Analysis of Variance in Excel....
View Full Document

## This lab report was uploaded on 04/16/2008 for the course STAT 200 taught by Professor Weiss during the Spring '08 term at Rochester.

Ask a homework question - tutors are online