Descriptive Statistics in R
Descriptive Statistics in R
How to Use the confint() Function in R
You can use the confint() function in R to calculate a confidence interval for one or more parameters in a fitted regression model.
This function...
Descriptive Statistics in R
R: How to Count TRUE Values in Logical Vector
You can use the following methods to count the number of TRUE values in a logical vector in R:
Method 1: Use sum()
sum(x, na.rm=TRUE)
This method...
Descriptive Statistics in R
How to Find All Unique Combinations of Two Vectors in R
You can use one of the following methods to find all unique combinations of elements from two vectors in R:
Method 1: Use tidyr
library(tidyr)
#find unique...
Descriptive Statistics in R
How to Calculate Standard Deviation by Group in R (With Examples)
You can use one of the following methods to calculate the standard deviation by group in R:
Method 1: Use base R
aggregate(df$col_to_aggregate, list(df$col_to_group_by), FUN=sd)
Method...
Descriptive Statistics in R
How to Select All But One Column in R (With Examples)
You can use the following methods to select all but one column in a data frame in R:
Method 1: Select All But One Column...
Descriptive Statistics in R
How to Add Multiple Columns to Data Frame in R
You can use the following methods to add multiple columns to a data frame in R:
Method 1: Add Multiple Columns to data.frame Object
df
Method...
Descriptive Statistics in R
How to Find the Size of a Data Frame in R
You can use the following functions in R to display the size of a given data frame:
nrow: Display number of rows in data frame
ncol:...
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