ANOVA
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A. The number of shares of Icom, Inc. turned over during a month, and the price at the end of the month are listed in the following table.
Also given are the estimated Y' values.
Turnover (thousands of shares)
X Y(actual price) Y'(estimated price)
4 $2 $2.70
1 1 0.6
5 4 3.4
3 2 2
2 1 1.3
Draw a scatter diagram. Plot a line through the dots.
Compute the coefficient of determination.
Interpret the coefficient of determination.
B. The following is sample information. Test the hypothesis that the treatment means are equal. Use the .05 significance level.
Treatment A Treatment B Treatment C
9 13 10
7 20 9
11 14 15
9 13 14
12 15
10
State the null and the alternate hypotheses.
What is the decision rule? Use Excel to generate an ANOVA table, making sure you have SST, SSE, and SS total. State your decision regarding the null hypothesis.
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