Question
In ANOVA, error variance is computed by considering
The correct answer is
Within group
Analysis of Variance (ANOVA) is a statistical method used to test differences between two or more means. It works by partitioning the total variability observed in the data into different sources.
Understanding ANOVA Variance Components
In ANOVA, the total variation (Total Sum of Squares, SST) is typically broken down into two main components:
- Between Group Variance (SSB): This measures the variability between the sample means of the different groups being compared.
- Within Group Variance (SSW): This measures the variability of the scores within each individual group, pooled together. It represents the error or random variation that is not explained by the group differences.
Computing ANOVA Error Variance
The error variance in ANOVA is essentially an estimate of the population variance based on the variability observed *within* each of the groups. It is calculated using the Within Group Sum of Squares (SSW) and the appropriate degrees of freedom.
Therefore, error variance is computed by considering the variation Within group.
The correct option is C.
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Important Questions from Research methodology - Teaching
- Match the LIST-I with LIST-II
LIST-I
(Concepts)LIST-II
(Meanings)A. Theory I. Generalized representations of a system or an object, that is constructed to some aspects of that system or the system as a whole. B. Model II. Research problem is represented by a mathematical model. C. Survey III. It is a set of systematically interrelated propositions that explain and predict a phenomenon or a fact. D. Modeling IV. It is a data collection technique using a questionnaire.
Choose the correct answer from the options given below: - From the above paragraph, which one of the following is the independent variable ?
- Scientific approach to research___
- Arrange the following in sequential order:
A. Review existing research
B. Develop hypothesis
C. Determine appropriate methodology
D. Analyze and interpret the results
E. Collect relevant data
Choose the correct answer from the options given below: - Write in sequential order the phases in the development of mass media research as postulated by Wimmer and Dominick:
A. The medium
B. Effects of the medium
C. How the medium can be improved
D. Uses and users of the medium
Choose the correct answer from the options given below:
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