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R Programming · skill quizzes

R Programming quizzes

Test your knowledge with skill-focused quizzes. Each quiz targets one specific skill — answer first, score at the end, then review every miss with worked solutions.
42
Quizzes
427
Questions
01
apply-Family FunctionsIntermediate
10 questions · 15 min ·
02
Vectorization PerformanceIntermediate
10 questions · 15 min ·
01
Vectorization vs. LoopsIntermediate
10 questions · 15 min ·
01
Creating VectorsIntermediate
15 questions · 23 min ·
02
Data FramesIntermediate
10 questions · 15 min ·
03
TibblesIntermediate
10 questions · 15 min ·
04
Vector IndexingIntermediate
15 questions · 23 min ·
05
which() & Logical SubsettingBeginner
8 questions · 12 min ·
01
testthatIntermediate
10 questions · 15 min ·
01
Package StructureIntermediate
10 questions · 15 min ·
01
Git CommitsIntermediate
10 questions · 15 min ·
02
Installing & Loading PackagesIntermediate
10 questions · 15 min ·
03
Using .gitignoreIntermediate
10 questions · 15 min ·
01
Reading Excel FilesIntermediate
10 questions · 15 min ·
02
Writing CSV FilesIntermediate
10 questions · 15 min ·
01
Building ggplotsIntermediate
10 questions · 15 min ·
02
Creating Common PlotsIntermediate
10 questions · 15 min ·
03
Customizing ggplotIntermediate
10 questions · 15 min ·
04
FacetingIntermediate
10 questions · 15 min ·
05
filter()Intermediate
10 questions · 15 min ·
06
group_by() & summarize()Intermediate
10 questions · 15 min ·
07
Handling Missing Values in ReshapingIntermediate
10 questions · 15 min ·
08
Joining Data FramesIntermediate
10 questions · 15 min ·
09
select() & rename()Intermediate
10 questions · 15 min ·
10
separate() & unite()Intermediate
10 questions · 15 min ·
01
Extracting Model OutputsBeginner
8 questions · 12 min ·
02
Formula SyntaxIntermediate
10 questions · 15 min ·
03
Linear Models (lm)Intermediate
10 questions · 15 min ·
04
Logistic Regression (glm)Intermediate
10 questions · 15 min ·
05
Random SamplingIntermediate
10 questions · 15 min ·
06
Simulation & VariabilityIntermediate
10 questions · 15 min ·
01
Communicating LimitationsIntermediate
10 questions · 15 min ·
02
Explaining Analysis StepsIntermediate
10 questions · 15 min ·
03
Naming & FormattingIntermediate
10 questions · 15 min ·
04
Readable PipelinesIntermediate
10 questions · 15 min ·
05
Stating AssumptionsIntermediate
10 questions · 15 min ·
06
Style ConventionsIntermediate
10 questions · 15 min ·
01
Arithmetic Operators & PrecedenceIntermediate
12 questions · 18 min ·
02
Vectorized OperationsIntermediate
10 questions · 15 min ·
01
Cleaning Text DataBeginner
9 questions · 14 min ·
02
lubridate FunctionsIntermediate
10 questions · 15 min ·
03
Regular ExpressionsIntermediate
10 questions · 15 min ·