Compute Standard Error Mean R
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Standard Error Of The Mean Formula
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Standard Error Of The Mean Excel
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Details std.error will accept a numeric vector. Value The conventional standard error of the mean = sd(x)/sqrt(sum(!is.na(x))) Author(s) Jim Lemon See Also sd [Package plotrix version 2.6-1 Index]
standard error equals sd/√n: > x https://stat.ethz.ch/R-manual/R-devel/library/stats/html/sd.html se se [1] 4.236195 Calculate the SD of data frame (matrix): >BOD #R Biochemical standard error Oxygen Demand database Time demand 1 1 8.3 2 2 10.3 3 3 19.0 4 4 16.0 5 5 15.6 6 7 19.8 > apply(BOD,2,sd) Time demand 2.160247 4.630623 standard error of R Tutorials R Data Types Loop, Condition Statements Plotting and Graphics String Manipulations Math Functions Matrix Manipulations Read & Write Data Statistical Analysis All Functions List :: Popular :: » R PCH Symbols » R Color Names » R Regular Expression » R tapply Function » R String Functions » R Plot Function » R Builtin Datasets List Python Tutorials HTML Tutorials JavaScript Tutorials Statistics News, Events Worldwide Unit Conversions Top Visited Websites Directory endmemo.com © 2016 Terms of Use
a numeric vector or an R object which is coercible to one by as.double(x). na.rm logical. Should missing values be removed? Details Like var this uses denominator n - 1. The standard deviation of a zero-length vector (after removal of NAs if na.rm = TRUE) is not defined and gives an error. The standard deviation of a length-one vector is NA. See Also var for its square, and mad, the most robust alternative. Examples sd(1:2) ^ 2 [Package stats version 3.3.0 Index]