📊Basic Statistics Calculator
Enter a list of numbers to get mean, median, mode, standard deviation, variance, quartiles (Q1, Q3), range, and sum in one go. Useful for homework and papers, test score analysis, survey results, and experiment data.
How to use
- 1Enter numbers separated by commas, line breaks, or spaces.
- 2Basic statistics calculate automatically.
FAQ
Sample vs population?+
Both shown. Sample stdev divides by n-1; population stdev divides by n. For sample data, use sample statistics.
Does Excel-copied data work?+
Copying an Excel column gives line-break-separated data. Paste directly.
When is median better than mean?+
When outliers exist. E.g., one billionaire skews salary averages but doesn't affect the median.
What is standard deviation?+
How spread out the data is from the mean. Small = clustered near mean; large = widely scattered.
What are quartiles (Q1, Q3)?+
Quartiles divide data into 4 parts. Q1 = lower 25%, Q3 = upper 25%. Used in box plots.
Normality tests?+
Only basic statistics — no inferential stats like t-tests or normality tests. Use SPSS, R, or Python for those.