Recent questions tagged #datahandling

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Q: The function read.csv() imports data into

asked May 27, 2019 in Data Handling by tempuser

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Q: For a given matrix mat, how do you increment every element of the matrix by 3 and return a vector. (I) sapply(mat, function(x,y) sum(x)+y,y=3) (II) sapply(mat, function(x) sum(x)+3)

asked May 27, 2019 in Data Handling by tempuser

0 votes

Q: What will the following lines of code return x <- matrix(1:18, 6, 3) apply(x, 2, sum)

asked May 27, 2019 in Data Handling by tempuser

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Q: Which function is used over the margins of an array

asked May 27, 2019 in Data Handling by tempuser

+1 vote

Q: A hospital data contains patient's age and treatment they are undergoing. Which function can be used to find average of patients undergoing each of the treatments?

asked May 27, 2019 in Data Handling by tempuser

0 votes

Q: Applying lapply function on a matrix returns

asked May 27, 2019 in Data Handling by tempuser

0 votes

Q: Which function is very similar to lapply?

asked May 27, 2019 in Data Handling by tempuser

0 votes

Q: Which function can be used when a vector needs to be split into groups defined by a classifying factor, compute a function on the subsets, and return the results?

asked May 27, 2019 in Data Handling by tempuser

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