Statistical Functions in R

ByHariharan Rajendran

Statistical Functions in R

R language has many built in functions, in which statistical functions are mostly used on numeric vectors.

sum(x) – The sum of vector x

min(x) – The Minimum value of vector x

max(x) – The maximum value of vector x

mean(x) – The arithmetic mean of vector x

median(x) – The median of numeric vector x. 50% of data should be less than median and balance 50% data should be greater than median.

sd(x) – The standard deviation of vector x

var(x) – The Variance of numeric vector x

quantile(x,p) – The Pth sample quantile of numeric vector x. for example, quantile(x,.3) will tell us the value at which 30% of cases are less than value x.

summary(x) – It shows several statistics of vector x, including the above.


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About the Author

Hariharan Rajendran author

Hariharan Rajendran is a Microsoft Certified Trainer and Lead BI Solutions Consultant with 8+ years of experience in Database, BI and Azure platforms. Hariharan is also an active community leader, speaker & organizer and leads the Microsoft PUG (Power BI User Group – Chennai), SQLPASS Power BI Local Group – Chennai and an active speaker in SQL Server Chennai User Group and also a leader in Data Awareness Program worldwide events. Hariharan also frequently blogs (, provides virtual training (on ad-hoc basis) on Microsoft Azure, Database Administration, Power BI and database development to worldwide clients/audience.

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