What is missing value imputation? How do you handle missing values in python or r?

134

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What is the difference between select and update query?

99

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What is association analysis?

100

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How do you do for loops in python and r?

119

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What is data science? How would you say it is similar or different to business analytics and business intelligence?

87

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What is an outlier? How do you treat outlier data?

78

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What is column storage?

110

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How is random forests different from decision trees?

105

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Name some kinds of graphs and explain how you would build them in python or r.

101

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How do you do data import in sas?

94

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What is churn? How would it help predict and control churn for a customer?

114

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Which package is used to do data import in r and python? How do you do data import in sas?

104

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What is clustering? What is the difference between kmeans clustering and hierarchical clustering?

109

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What is advantage of using apply family of functions in r?

105

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How do you use lambda in python?

100

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