Which of the given options will be the output of the following code when it is executed in R?

var <— c(8.4.NA.12)

mean(var, na.rm=TRUE)

Which of the following text retrieval measures is the percentage of documents, which are relevant to the query and were actually retrieved?

Which of the following is the correct default value of the HOLDOUT_PERCENTAGE parameter of the Microsoft logistic regression algorithm, which is used for specifying the percentage of cases within the training data used to calculate a holdout error?

In advanced statistics, which of the following statements is correct about the Dirichlet Regression method?

In the given image, which matrix is in the row echelon form?

What is the rank of the matrix shown in the image?

Suppose a user has typed the following command, where mdata is a variable to which the user's data is stored. head(mdata)

In which of the following types of reasoning in data science, the conclusions reached are probable, reasonable. plausible and believable? Deductive reasoning Inductive reasoning

Which of the following statements is NOT correct about data science?

Which of the following is a descriptive function involved in data mining?

In survival analysis, which of the following methods is used to model the hazard function on a set of predictor variables?