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Statistics
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Analysis of variance
What is the assumption of the analysis of variance?
The residuals are normally distributed
The residuals are uniformly distributed
The residuals are exponentially distributed
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Why?
Analysis of variance
What is the purpose of ANOVA?
To analyze the differences among variances
To analyze the differences among proportions
To analyze the differences among means
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Why?
Analysis of variance
Who developed the analysis of variance (ANOVA)?
Karl Pearson
Ronald Fisher
Jerzy Neyman
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Why?
Ensemble learning
What is the advantage of using ensemble methods with diverse models?
Faster computation time
Higher accuracy
Reduced overfitting
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Why?
Ensemble learning
What is the purpose of ensemble methods in statistics and machine learning?
To generate diverse hypotheses
To reduce computation time
To increase the size of the hypothesis space
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Linear discriminant analysis
What is linear discriminant analysis (LDA) used for?
Dimensionality reduction
Cluster analysis
Regression analysis
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Why?
Homosexuality in India
What is the percentage of the Indian population that identifies as homosexual according to the Ipsos report on LGBT+ Pride 2021 Global Survey?
1%
3%
5%
10%
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Why?
Moderation (statistics)
What is the Johnson-Neyman approach used for?
To plot and interpret two-way interactions
To reduce multicollinearity in moderated regression
To determine whether the effect of X on Y is statistically significant at particular values of Z
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Why?
Moderation (statistics)
What is the role of mean-centering in moderated regression?
It improves the overall model fit
It reduces multicollinearity, resulting in more interpretable regression coefficients
It has no effect on the regression analysis
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Why?
Moderation (statistics)
What is a moderator variable in statistics?
The variable that is being predicted
The variable that is used to predict another variable
The variable that affects the relationship between two other variables
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