How to use: Calculate statistical measures of central tendency from data sets. Select Formula (Mean, Median, or Mode). Enter Values as comma-separated numbers (e.g., 10, 20, 30, 25, 15). Results show the selected measure. Mean = average (sum ÷ count), useful for overall performance. Median = middle value when sorted, resistant to outliers. Mode = most frequent value, identifies common occurrences. Example: For data 10, 15, 20, 20, 30: Mean=19, Median=20, Mode=20. Applications: grade analysis, salary comparisons, market research, quality control, scientific data analysis. Mean affected by extreme values, median better for skewed distributions. Essential for data interpretation and decision-making.