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

Expected Value Calculator

Compute the expected value (mean) of a discrete probability distribution by entering up to three outcomes and their probabilities. Ideal for decision analysis, gambling odds, and statistics coursework.

Outcome 1 Value

Outcome 1 Probability

Outcome 2 Value

Outcome 2 Probability

Outcome 3 Value

Outcome 3 Probability

Fill in the required fields to see your result.

Probability

Hypothesis Test Calculator

Run a one-sample z-test or t-test to determine whether a sample mean significantly differs from a hypothesized population mean. Essential for quality control, clinical trials, and academic research.

Sample Mean

Hypothesized Mean (μ₀)

Sample Standard Deviation

Sample Size (samples)

Fill in the required fields to see your result.

Key differences

	Expected Value Calculator	Hypothesis Test Calculator
Category	Probability	Probability
Inputs required	6	4
Result	Expected Value	Test Statistic
What it does	Compute the expected value (mean) of a discrete probability distribution by entering up to three outcomes and their probabilities. Ideal for decision analysis, gambling odds, and statistics coursework.	Run a one-sample z-test or t-test to determine whether a sample mean significantly differs from a hypothesized population mean. Essential for quality control, clinical trials, and academic research.