You can use the following methods to count the number of unique values in a column of a data frame in R:…
Descriptive Statistics in R

 Descriptive Statistics in RRSoftware Tutorials
R: How to Use microbenchmark Package to Measure Execution Time
by Tutor AspireYou can use the microbenchmark package in R to compare the execution time of different expressions. You can use the following syntax…
 Descriptive Statistics in RRSoftware Tutorials
How to Use mtext Function in R (With Examples)
by Tutor AspireYou can use the mtext() function in R to write text in the margins of a plot. This function uses the following…
 Descriptive Statistics in RRSoftware Tutorials
How to Use sub() Function in R (With Examples)
by Tutor AspireThe sub() function in R can be used to replace the first occurrence of certain text within a string in R. This…
 Descriptive Statistics in RRSoftware Tutorials
How to Use cor() to Calculate Correlation Coefficients in R
by Tutor AspireYou can use the cor() function in R to calculate correlation coefficients between variables. Here are the most common ways to use…
 Descriptive Statistics in RRSoftware Tutorials
How to Use the identical() Function in R (With Examples)
by Tutor AspireThe identical() function in R can be used to test whether or not two objects in R are exactly equal. This function…
 Descriptive Statistics in RRSoftware Tutorials
How to Calculate Cumulative Sum by Group in R
by Tutor AspireYou can use the following methods to calculate a cumulative sum by group in R: Method 1: Use Base R df$cum_sum Method…
 Descriptive Statistics in RRSoftware Tutorials
How to Use the confint() Function in R
by Tutor AspireYou can use the confint() function in R to calculate a confidence interval for one or more parameters in a fitted regression…

You can use the melt() function from the reshape2 package in R to convert a data frame from a wide format to…
 Descriptive Statistics in RRSoftware Tutorials
How to Use the linearHypothesis() Function in R
by Tutor AspireYou can use the linearHypothesis() function from the car package in R to test linear hypotheses in a specific regression model. This…