The variance should be constant between each treatment with another. A. True B.

Question

The variance should be constant between each treatment with another. A. True B. False In Randomized complete block design, the experimental order within each block should be randomized. A. True B. False When using Fishers test for comparing pairs of means, if a confidence interval for the difference between one pair includes zero, it means the difference of means are significant. A. True B. False The residuals versus the experimental observation order plot can be used to check the constant variance assumption in ANOVA. A. True B. False

Explanation / Answer

1) True . Yes variance should be constant between each treatment and with each other as it makes variability constant.

2) True. Yes randomization should be within block is the basic characteristic of randomized block design.

3) True. If difference is zero that means it is statistically significant as 0 < p-value 0.05 , therefore we will reject the null hypothesis and conclude that it is statistically significant.

4) True. As we have equality of variance assumption in ANOVA we can check that by plotting residuals against treatment/experimental observation.

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