October 2012
Beginner
420 pages
9h 37m
English
book
Industrial Statistics with Minitab
by Pere Grima Cintas, Lluis Marco Almagro, Xavier Tort-Martorell Llabres
Content preview from Industrial Statistics with Minitab
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11.3 ANOVA with Two Factors
Example 11.2: A study is carried out to analyze whether the type of painting, among three types available, affects the hardness of a certain type of enamel. The firing of the parts is done in an oven with four trays, one above another, and with 15 parts on each. Since it can be assumed that the tray might have an influence on the result, because of its position in the oven, a blocked design is used putting five parts of each type of painting on each tray. The following hardness measures are obtained:
Can we affirm that the type of painting affects the degree of hardness?
Notice that now we have two factors which may affect the response: the type of painting and the tray on which the parts are placed.
Place obtained values in the worksheet as indicated below:
Stat > ANOVA > Two-way
Example 11.3: The tensile strength of different pieces ...
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