STATISTICAL TECHNIQUES AND TOOLS
ANALYSIS OF VARIANCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The means of two or more samples are equal
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the means of more than two samples are equal
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the means of two or more populations are equal
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the means of two samples are equal
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Detailed explanation-1: -The one-way ANOVA is used to determine whether there are any statistically significant differences between the means of three or more independent (unrelated) groups. A two-way ANOVA is an extension of the one-way ANOVA. With a one-way, you have one independent variable affecting a dependent variable.
Detailed explanation-2: -Answer: The ANOVA procedure is a statistical approach for determining whether or not the means of two or more samples are equal. two populations are jointly normally distributed.
Detailed explanation-3: -Typically, a one-way ANOVA is used when you have three or more categorical, independent groups, but it can be used for just two groups (but an independent-samples t-test is more commonly used for two groups).
Detailed explanation-4: -The two-sample t-test (Snedecor and Cochran, 1989) is used to determine if two population means are equal. A common application is to test if a new process or treatment is superior to a current process or treatment. There are several variations on this test.