Please use R: an analyst is looking to identify differences between dentists, methods and alloys on the hardness for gold fillings. Using the dataset below please answer the following questions: (a) Conduct a test to see if there are main effects for dentist, method, alloy, temperature. (b) Produce a plot which will show these effects if any. Interpret the plot, which should match your result in a. (c) Conduct a test to see if there are main effects for alloy and temperature as well as interaction effects.
Please use R: an analyst is looking to identify differences between dentists, methods and alloys on the hardness for gold fillings. Using the dataset below please answer the following questions: (a) Conduct a test to see if there are main effects for dentist, method, alloy, temperature. (b) Produce a plot which will show these effects if any. Interpret the plot, which should match your result in a. (c) Conduct a test to see if there are main effects for alloy and temperature as well as interaction effects.
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Question
Please use R: an analyst is looking to identify differences between dentists, methods and alloys on the hardness for gold fillings. Using the dataset below please answer the following questions:
(a) Conduct a test to see if there are main effects for dentist, method, alloy, temperature.
(b) Produce a plot which will show these effects if any. Interpret the plot, which should match your result in a.
(c) Conduct a test to see if there are main effects for alloy and temperature as well as interaction effects.
(d) Product a plot which will show these effects if any. Interpret the plot, which should match your result in c.
 alt="1
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dentist
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temperature
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hardness
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temperature
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hardness
813
792
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835
782
698
665
1115
835
870
752
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803
813
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882
772
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743
933
792
824
835
715
673
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681
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