What are the steps to build and evaluate a linear regression model in r?

99

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What is the difference between a bar-chart and a histogram?

104

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What do you know about the rattle package in r?

81

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What is the difference between a bar-chart and a histogram? Where would you use a bar-chart and where would you use a histogram?

86

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Given a vector of numbers, how would you turn the values into scientific notation?

97

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How would you facet the data using ggplot2 package?

92

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How would you find out the mean of one column with respect to another?

159

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Tell me something about shinyr.

86

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How can you simulate random walk model using r?

121

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How would you join multiple strings together?

95

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What is a random walk model and how can you simulate it using r?

101

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How can you load a .csv file in r?

76

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What is a factor?

84

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What is a white noise model?

130

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What is a white noise model and how can you simulate it using r?

93

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