Question: Based in this exercise: ANOVA problem: Five samples for each of four brands of chips were tested for sodium content, measured in milligrams of sodium

Based in this exercise:

ANOVA problem:Five samples for each of four brands of chips were tested for sodium content, measured in milligrams of sodium per cup serving.

Brand 1 Brand 2 Brand 3 Brand 4
250 175 175 200
251 185 180 210
260 175 180 210
255 180 170 195
245 165 190 205

Using the ANOVA method at 0.05 significance level, test if there is a difference between the average sodium content of the different brands of chips.

Q: What is the independent variable?

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