Probability Studio

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Make probability something you can see and touch. Probability Studio combines an interactive distribution explorer with a practical probability calculator. Start with the theoretical chart, explore its shape, then watch live observations build a sample. EXPLORE PROBABILITY IN A TANGIBLE WAY Swipe across a chart to select an area below or above a value. Use two fingers to explore the probability between two values. Tap a discrete bar to inspect one outcome. Gentle haptic landmarks on supported iPhones help you align with continuous-axis ticks. CALCULATE IN BOTH DIRECTIONS Tap the probability button to enter precise bounds. Tap the probability result to find a value from a probability. Choose a lower tail, central interval or upper tail, enter a custom probability, or use a familiar preset. Calculations retain full internal precision while long values are rounded where space is limited. COMPARE THEORY AND OBSERVATION Switch between density or mass functions and cumulative distribution functions in Theory mode. In Live sample, watch observations accumulate, compare theoretical and observed probabilities, pause sampling or reset the experiment. Explore rolling samples from 10 to 10,000 observations. SHARE WHAT YOU SEE Tap Share chart below the chart to open the iOS share controls. Copy, save or send a ready-made image labelled with the distribution, parameters, selected region and probability. 15 DISTRIBUTIONS Continuous: Normal, Uniform, Exponential, Lognormal, Chi-squared, Student’s t, F, Beta, Gamma and Weibull. Discrete: Binomial, Poisson, Bernoulli, Geometric and Negative Binomial. Adjust parameters with precise number fields and increment controls. Each distribution includes a short explanation of its variables and an example use. GET STARTED WITH A TOUR Accept the optional first-launch tour or return to it using ?. Five interactive lessons introduce distributions, touch selection, calculations, chart sharing and live sampling. Made for iPhone and iPad. Calculations run on your device. No account is required.Read more

Make probability something you can see and touch. Probability Studio combines an interactive distribution explorer with a practical probability calculator. Start with the theoretical chart, explore its shape, then watch live observations build a sample. EXPLORE PROBABILITY IN A TANGIBLE WAY Swipe across a chart to select an area below or above a value. Use two fingers to explore the probability between two values. Tap a discrete bar to inspect one outcome. Gentle haptic landmarks on supported iPhones help you align with continuous-axis ticks. CALCULATE IN BOTH DIRECTIONS Tap the probability button to enter precise bounds. Tap the probability result to find a value from a probability. Choose a lower tail, central interval or upper tail, enter a custom probability, or use a familiar preset. Calculations retain full internal precision while long values are rounded where space is limited. COMPARE THEORY AND OBSERVATION Switch between density or mass functions and cumulative distribution functions in Theory mode. In Live sample, watch observations accumulate, compare theoretical and observed probabilities, pause sampling or reset the experiment. Explore rolling samples from 10 to 10,000 observations. SHARE WHAT YOU SEE Tap Share chart below the chart to open the iOS share controls. Copy, save or send a ready-made image labelled with the distribution, parameters, selected region and probability. 15 DISTRIBUTIONS Continuous: Normal, Uniform, Exponential, Lognormal, Chi-squared, Student’s t, F, Beta, Gamma and Weibull. Discrete: Binomial, Poisson, Bernoulli, Geometric and Negative Binomial. Adjust parameters with precise number fields and increment controls. Each distribution includes a short explanation of its variables and an example use. GET STARTED WITH A TOUR Accept the optional first-launch tour or return to it using ?. Five interactive lessons introduce distributions, touch selection, calculations, chart sharing and live sampling. Made for iPhone and iPad. Calculations run on your device. No account is required.