How to Use This Statistics Calculator

Enter your data as comma-separated or space-separated numbers, and the calculator will instantly compute all key descriptive statistics. This tool is perfect for students, researchers, and anyone who needs to quickly analyze a data set.

Understanding the Results

• Mean: The arithmetic average — sum of all values divided by the count.
• Median: The middle value when data is sorted. Less affected by outliers than the mean.
• Mode: The most frequently occurring value(s). If all values are unique, there is no mode.
• Standard Deviation: Measures how spread out the data is from the mean. A low value means data points are close to the mean.
• Variance: The square of the standard deviation. Used extensively in statistical analysis.
• Quartiles: Q1 (25th percentile), Q2 (median), and Q3 (75th percentile) divide the data into four equal parts.
• IQR: Interquartile Range (Q3 - Q1) measures the spread of the middle 50% of data.

Population vs Sample

This calculator uses population formulas for variance and standard deviation (dividing by N). If your data is a sample from a larger population, the sample standard deviation (dividing by N-1) will be slightly larger. For large data sets, the difference is negligible.