project3 - STA 6166 Fall 2010 Project 2 Due 10/19/10 Part...

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STA 6166 – Fall 2010 Project 2 – Due 10/19/10 Part 1: New Wine Development A winemaster at a large winery is considering a new wine product and is considering 5 varieties of grapes for use in the wine. She plans to create 10 batches for each of the 5 grape varieties, and have a group of professional wine tasters each (blindly) rate each batch on a (continuous) visual analogue scale from 0-10, then average their scores for a single response for each batch. She can only use one machine to create the 50 batches. Provide a random assignment of grape varieties (A,B,C,D,E) to the sequence of 50 production runs. Describe how you did this assignment (computer generated, digits from a random # table, rolling of a die, etc). The datasets winescore.txt and winescore.xls provide the results of her experiment. Grape types and rating scores are given based on the actual sequence she ran (the chances of your answer to the previous part matching mine is approximately 1 in 4.8x10 31 ). Complete the following parts. Plot the rating scores versus the grape type. Briefly describe the between and within grape variation pattern. Obtain the Analysis of Variance. List all sources of variation, degrees of freedom, sums of squares,
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project3 - STA 6166 Fall 2010 Project 2 Due 10/19/10 Part...

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