When you’re trying to determine whether the means in several sets of data that depend on one factor are significantly different, one-way analysis of variance, or ANOVA, is the correct tool to use. Is there a significant difference in the length of time that four doctors keep mothers in the hospital after they give birth?ĭoes the production yield for a new drug depend on whether the size of the container in which the drug is produced is large, small, or medium?ĭoes the drop in blood pressure attained after taking one of four drugs depend on the drug taken? We often have several different groups of people or items and want to determine whether data about the groups differs significantly. How can I use the results of one-way ANOVA for forecasting? If I am determining whether populations have significantly different means, why is the technique called analysis of variance? More specifically, does it really matter whether the books are placed in the front, back, or middle of the computer book section?
The owner of my company, which publishes computer books, wants to know whether the position of our books in the computer book section of bookstores influences sales.
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