Test Your Programming Skills with Safcode!

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Here is all important interview / exams questions.
Student doing practice apptitude test on safcode platform.
Instruction: "Total Number of Questions: 20
Each question carry 10 mark , no negative marking"

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Quiz Start

1. __________ are useful when you want to display proportional makeup of a sample in presentations. Scatter charts
Bubble charts
Pie charts
Bar charts

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2. The vertical dashed lines in the boxplot are known as ______________. Notches
Tails
Outliers
Whiskers

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3. which function converts list to a vector? unlist()
cnvert_list()
none of them
de_list()

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4. _____________ is not a type of operator in R. Relational
Mathematical
Logical
Assignment

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5. The __________ function is used to sort the values of column in ascending or descending order. arrange()
sort()
mutate()
manage()

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6. Points more than 1.5 times the inter quartile range above the third quartile is the point of ___________. 100th percentile
25th percentile
75th percentile
50th percentile

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7. How are null entries in a data frame denoted in R? NaN
None of these
na
n/a

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8. The layers in ggplot2 are called ___________. sheets
levels
adds on
geoms

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9. Histograms are good to display the _________ of the data. Quartile
Median
Mean
Mode

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10. What is the memory limit in R? 2TB
4TB
8TB
6TB

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