Q. Which of the following code drop the ith and jth column?

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Q. Which of the following statement find cases with no missing values?

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Q. Which of the following statement is normal distribution?

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Q. which of the following statement gives cumulative sum?

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Q. Which of the following is uniform distribution?

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Q. Which of the following truncates real x to integers?

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Q. Which of the following tests each element of x for membership in y?

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Q. Which of the following finds the maximum value in the vector x, exclude missing values?

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Q. Which of the following produces the variance covariance matrix?

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Q. Which of the following will reverse the order of values in x?

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Q. Which of the following finds row sums for each level of a grouping variable?

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Q. Which of the following statement applies the function (FUN) to either rows (1) or columns (2) on object X?

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Q. Which of the following statement finds the maximum for each column?

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Q. Which of the following statement tells the row with the minimum value for every column?

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Q. Which of the following may be used for linear regression?

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Q. Which of the following sets the size of the outer margins for the graph?

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Q. Which of the following function is used for plotting histogram?

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Q. Which of the following will add the title “R language” to the graph?

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Q. ______ let’s you perform SQL queries on your R data frames.

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Q. ______ splits a data frame and results an array.

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