Key Features

• Calculates descriptive metrics including mean, median, mode, standard deviation, variance, range, and IQR.
• Builds grouped frequency tables with count, frequency, and cumulative frequency.
• Includes Jarque-Bera normality testing, 95% confidence interval, and IQR outlier detection.
• Supports linear regression and one-sample t-tests for quick study and analysis workflows.

How to Use

• Paste numeric values in the input area using commas, spaces, or line breaks.
• Use "Generate Sample" for demo data, or add one value through "Add Point".
• Set frequency bin count between 3 and 20 for better grouped summaries.
• Regression requires X values with the same length as Y values.
• t-test supports two-tailed, left-tailed, and right-tailed options.

Use Cases

• Statistics coursework, classroom labs, and exam preparation.
• Survey review, distribution checks, and outlier screening.
• Operational analysis with quick correlation and significance checks.

Notes

• All calculations run locally in your browser.
• With small samples, normality and significance outputs should be interpreted carefully.
• For critical decisions, validate results with full statistical workflows.