Standard deviation calculator

Video Information Mean Median Mode IRQ Outliers Histogram maker

The standard deviation calculator computes the standard deviation, variance, mean, sum, SEM and MAD.

Enter comma , space or Enter after each data value.
The tool doesn't count empty cells or non-numeric cells.
How to do with R?

Information

Target: Calculate average, standard deviation, the sample size for several variables. Present histogram chart and average range chart
Variance calculator and standard deviation calculator.

Statistics

n - Sample size, the number of values.
Mean - Average.
S - Sample standard deviation, if the list of values you entered is only a sample from the entire population, this is the best estimation for the Population Standard Deviation.
S2 - Sample variance, if the list of values you entered is only a sample from the entire population, this is the best estimation for the Population Variance.
σ - Population standard deviation, if the list of values you entered is the entire population, this is the exact Standard deviation.
σ2 - Population variance, if the list of values you entered is the entire population, this is the exact Variance.
MAD - Mean absolute deviation, the average of the absolute distances from the average.
SEM - Standard Error of the Mean, The standard deviation of the mean.

Sample variance formula
S2 =Σ(𝑥i - x̄)2
n-1

Population variance formula
σ2 =Σ(𝑥i - x̄)2
n

Sample standard deviation formula

S = √(sample variance)

Population standard deviation formula

σ = √(population variance)

Median Absolute Deviation (MAD) formula
MAD =Σ|𝑥i - x̄|
n

Standard Error of the Mean (SEM) formula
SEM =S
√n