R
R Data Practice Master Sheet
R practice grouped around vectors, data frames, missing values, joins, factors, dates, plotting, and summaries.
Vectors, Data Frames & Missing Values
11 problems#0047
Mean With Missing Valuesrmissing-valuesmean
Easy10 XP#0048Filter Rows in a Data Framerdata-framefiltering
Easy10 XP#0089Standardize an R Vectorrvectorsscaling
Easy10 XP#0091Clean Missing Values in Rrmissing-valuesdata-cleaning
Easy10 XP#0109Subset Data Frame With Conditionsrfilteringdata-frame
Easy10 XP#0126Create Summary Data Frame in Rrdata-framesummary
Easy10 XP#0144Add a Derived Column in Rrdata-framemutate
Easy10 XP#0145Remove Rows With Missing Valuesrmissing-valuescleaning
Easy10 XP#0163Create a Category With ifelse in Rrdata cleaningifelse
Easy10 XP#0178Parse a Date Column in Rrdatescleaning
Easy10 XP#0193Recode Status Values in Rrdata cleaning
Easy10 XPGrouped Summaries, Sorting & Joins
7 problems#0049
Grouped Summary by Categoryraggregationgroup-by
Medium15 XP#0050Left Join with mergerjoinsmerge
Medium15 XP#0126Create Summary Data Frame in Rrdata-framesummary
Easy10 XP#0127Order a Data Frame in Rrsorting
Easy10 XP#0177Mean by Group With aggregate in Rraggregation
Easy10 XP#0194Remove Duplicate Rows in Rrdeduplication
Easy10 XP#0210Left Join Customers and Orders in Rrjoinsdplyr
Medium20 XPFactors, Tables, Dates & Plotting
8 problems#0089
Standardize an R Vectorrvectorsscaling
Easy10 XP#0090Count Factor Levelsrfactorscounts
Easy10 XP#0108Basic Scatter Plot in Rrplotting
Easy10 XP#0144Add a Derived Column in Rrdata-framemutate
Easy10 XP#0162Count Factor Levels in Rrfactorstables
Easy10 XP#0163Create a Category With ifelse in Rrdata cleaningifelse
Easy10 XP#0178Parse a Date Column in Rrdatescleaning
Easy10 XP#0209Order Factor Levels in Rrfactorsordering
Easy10 XP