66. Define relaimpo package.
It is used to measure the relative importance of each of the predictor in the model.
67. Why car package is used?
It provide a variety of regression including scatter plots, variable plots and it also enhanced diagnostic.
68. Define robust package.
It provides a library of robust methods including regression.
69. What is robustbase?
It is a package which provides basic robust statistics including model selection methods.
70. Define plotmeans().
It is define under gplots package which includes confidence intervals and it produces mean plot for single factors.
71. What is the full form of MANOVA?
MANOVA stands for multivariate analysis of variance.
72. What is the use of MANOVA?
By using MANOVA we can test more than one dependent variable simultaneously.
73. Define mshapiro.test( ).
It is a function which defines in mvnormtest package. It produces the Shapiro-wilk test for multivariate normality.
74. Define barlett.test().
Barlett.test() is used to provide a parametric k-sample test of the equality of variances.
75. What is fligner.test()?
It is a function which provides a non-parametric k sample test of the equality of variances.
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