How do you install a package in r?

88

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From the below data-set, extract only those values where age>60 and sex=”f”.

518

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How would you make multiple plots onto a single page in r?

126

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What is principal component analysis and how can you create a pca model in r?

94

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Name some functions available in “dplyr” package.

91

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How would you check the distribution of a categorical variable in r?

91

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Explain about “initialize()” function in r?

75

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Write a custom function which will replace all the missing values in a vector with the mean of values.

68

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How would you create a new r6 class?

88

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How would you do a left and right join in r?

95

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Name some packages in r, which can be used for data imputation?

188

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What is a factor? How would you create a factor in r?

80

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What is the use of stringr package. Give some examples of the functions in stringr.

88

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give examples of while and for loop in r.

93

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What is the method to define a constant?

174

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