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Test Your Programming Skills with Safcode!
Here is all important interview / exams questions.
Student doing practice apptitude test on safcode platform.
Instruction: "Total Number of Questions: 10
Each question carry 10 mark , no negative marking"
1. Points more than 1.5 times the inter quartile range above the third quartile is the point of ___________.
2. The __________ function is used to select data by its column names.
all of them
3. The function that is used to extract or replace substrings in a character vector in ____________
4. Which function is used to add regression line to the scatter plot.
None of them
5. Which one is not a step of Data Preparation process.
None of the Them
Remove Duplicate Entries
6. __________ are useful when you want to display proportional makeup of a sample in presentations.
7. How to installed packages in R?
8. The __________ function is used to group data frame.
9. R is an__________programming language?
None of above
10. The layers in ggplot2 are called ___________.