Compare calculators

Both calculators run independently — change the inputs on either side to compare results.

Chi-Square Test Calculator

Compute the chi-square statistic to test whether observed frequencies differ significantly from expected ones, or whether two categorical variables are independent. Use it for analyzing survey responses, genetic ratios, market research, and contingency tables.

Observed Values (comma separated)

Expected Values (comma separated)

Fill in the required fields to see your result.

Statistics

One-Sample T-Test Calculator

Compute the one-sample t-statistic to test whether your sample mean differs significantly from a known or hypothesised population mean. The first inferential test most students learn — used in survey analysis, quality control, and any single-group comparison against a benchmark.

Sample Mean

Population Mean (H₀)

Sample Standard Deviation

Sample Size

Fill in the required fields to see your result.

Key differences

	Chi-Square Test Calculator	One-Sample T-Test Calculator
Category	Statistics	Statistics
Inputs required	2	4
Result	Chi-Square Statistic	T-Statistic
What it does	Compute the chi-square statistic to test whether observed frequencies differ significantly from expected ones, or whether two categorical variables are independent. Use it for analyzing survey responses, genetic ratios, market research, and contingency tables.	Compute the one-sample t-statistic to test whether your sample mean differs significantly from a known or hypothesised population mean. The first inferential test most students learn — used in survey analysis, quality control, and any single-group comparison against a benchmark.