MANE 6313

Week 4, Module B

Student Learning Outcome

Analyze simple comparative experiments and experiments with a single factor.

Module Learning Outcome

Analyze a one-way analysis of variance problem using R.

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One-Way Analysis of Variance

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Anova in R Documentation

• An excellent resource is https://statsandr.com/blog/anova-in-r/

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Step 1 - Load and Plot Data

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Step 1 Comments

• Create dataframe mortar to hold results

• Used new syntax to create box plot

• Strength~Additive - creates Box plot for each value of additive in data set

• New argument: data=mortar

• Does not require mortar\(\$\)Strength or mortar\(\$\)Additive

• Check for equal means and variances using Box plot

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Step 2 - Analyze Problem

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Step 2 - Analyze Problem (Method 2)

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Step 3 - Check Fitted Values

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R Demonstration

• Load Data
• Box Plot
• One-way ANOVA
• Print Fitted Values