Study questions

5. The methods for statistical analysis in the experimental protocol proposed that Duncan's multiple range test be used for comparing least squares means. Discuss when Duncan's test should be applied and whether it is appropriate in this case. If not, suggest what approach you would adopt.

6. It is proposed that the arc sine function be used for variables that are calculated as percentages. Discuss when and why an arc sine transformation is used? Is it appropriate to apply it to the percentage variables in this case study? Discuss any disadvantages that may occur in reporting results when transformations are used.

7. Details of the sensory analysis experiment are incomplete. Using the suggestions provided prepare a suitable experimental design and describe how the statistical analysis will be done. Write appropriate paragraphs that might be added to the protocol.

8. Go through the various measurements that are proposed. Decide which measurements are to be calculated from others, and rewrite the lists separating those measurements that are to be taken directly from the animals and those that are to be derived. Note the cases where the details on how measurements are to be obtained are unclear.

9. Design recording sheets to take the recorded data.