Question

10.46

10.46 A chi square test is easily implemented on a computer. With the counts 31 42 22 25 19 8 28 25 from Example 8 in columns 1-4, the MINITAB commands Dialog box: Stat > Tables > Chi-square Test for Association Pull down Summarized data in a two-way table. Type C1 - C4 in columns containing the table. Click Statistics and then check chi-square statistic, Display counts, Expected cell counts and Each cells contribution to chi-square. Click OK. Click OK produce the output Expected counts are printed below observed counts Method 1 Method 2 Method 3 Method 4 Total 25 120 25 80 50 200 42 30.00 30.0030.00 31 30.00 19 20.00 50 28 20.0020.0020.00 50 50 Total Chi sq -0.033+ 4.800+2.133 19.550 +0.050+7.200+3.200 + 1.250 Repeat the analysis using only the data from the first three methods.

Answer 1

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