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 One Mean

Test a population mean with a z or t procedure.

Interactive inference

Input mode

Raw data Summary statistics

Population standard deviation

Data

Paste numeric observations from Excel or Google Sheets.

Sample summary

Sample size (n)

Sample mean

Sample standard deviation (s)

Population standard deviation (σ)

Null mean (μ₀)

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.