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

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Which of the following finds the maximum value in the vector x, exclude missing values? (a) rm(x) (b) max(x, na.rm=TRUE) (c) all(x) (d) x%in%y I had been asked this question in an online quiz. My question is taken from Commands topic in section Commands, Packages, Visualizing Data and Linear Regression of R Programming Select the correct answer from above options

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The correct choice is (b) max(x, na.rm=TRUE) The best explanation: all(x%in%y) returns true if x is a proper subset of y.

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