Statistical Inference

Inference

Estimate population parameters, test hypotheses, assess distributional assumptions, and run rank-based procedures using pasted raw data or summary statistics.

Hypothesis Test for a Paired Mean Difference

Test the mean paired difference, defined as Sample 1 − Sample 2.

Interactive inference

Input mode

Raw data Summary statistics

Data

Paste paired observations in two columns. Every row must contain both measurements.

Paired-difference summary

Number of pairs (n)

Mean of differences

Standard deviation of differences

Null difference

Alternative hypothesis

Confidence level (%)

Enter the confidence level as a percentage. Example: 95 means 95% confidence and implies α = 0.05.

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Ready to calculate

Choose the input mode, paste data or enter summary statistics, then press Calculate.