Descriptive Statistics Calculator
A complete descriptive statistics tool for data analysis. Enter comma or space-separated numbers to immediately compute central tendency, dispersion, and quartiles.
PARAMETERS(1)
LOAD VERIFIED SCENARIO
ACTIVE COMPUTATION
Sample Mean (Average)
87.5714
Dataset size N = 7
Median
88
Sample Std Dev (s)
5.5635
Sample Variance (s²)
30.9524
Minimum
78
Maximum
95
Range
17
Interquartile Range (IQR)
7
MATHEMATICAL FORMULA & GOVERNING PRINCIPLES
Calculates sample standard deviation and sample variance using unbiased Bessel correction (N - 1).
FREQUENTLY ASKED QUESTIONS (FAQ)
What is the difference between sample and population standard deviation?
Population standard deviation divides by N when you have data for the entire population. Sample standard deviation divides by N - 1 (Bessel's correction) to provide an unbiased estimate when working with a sample.
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