Statistics Calculator

This calculator processes your numerical data set and computes essential statistical measures. It calculates measures of central tendency (mean, median, mode) and measures of dispersion (variance, standard deviation, range) to help you understand your data's characteristics.

1. 1

   Step 1

   Enter your data values separated by commas or spaces

2. 2

   Step 2

   Ensure you have at least 2 data points for meaningful results

3. 3

   Step 3

   Click the calculate button

4. 4

   Step 4

   Review the computed statistics including mean, median, mode, variance, and standard deviation

5. 5

   Step 5

   Use the results to understand your data distribution

• 1

  The mean is sensitive to outliers while the median is resistant

• 2

  Standard deviation measures spread - 68% of data falls within 1 SD of the mean in a normal distribution

• 3

  Variance is the square of standard deviation, useful for statistical tests

• 4

  A data set can have no mode, one mode, or multiple modes

• 5

  Range only considers extreme values and ignores the data distribution

• Using mean for skewed data instead of median

• Confusing population variance (σ²) with sample variance (s²) - sample variance divides by n-1

• Interpreting standard deviation without context of the mean

• Forgetting that mode may not exist for continuous data

• Comparing standard deviations of data with different units or scales