📊 Statistics & Probability

mean · median · mode · variance · std dev · coin flip · dice roll

📈 Statistics Calculator

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Count (n)

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Sum

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Mean (avg)

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Median

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Mode

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Range

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Variance

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Std Deviation

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Min

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Max

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Frequency Distribution

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🎲 Probability Simulators

🪙 Coin Flip

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Heads

Tails

Total: 0 flips

🎲 Dice Roll (d6)

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Total: 0 rolls

What is this?

Statistics is the science of collecting and analysing data. Probability measures how likely events are to occur. Together they power modern science, medicine, AI, and finance.

Why does it matter?

Every poll, clinical trial, weather forecast, and AI model uses statistics and probability. Statistical thinking is one of the most valuable skills of the 21st century.

Key terms

Mean — the average; sum of all values divided by the count Median — the middle value when data is sorted in order Mode — the value that appears most frequently in a dataset Probability — the likelihood of an event; from 0 (impossible) to 1 (certain) Sample — a subset of data chosen to represent a larger population Distribution — a description of how data values are spread across possible outcomes

🎯 Try this challenge

Simulate rolling a die 20 times using the simulator. What was your experimental probability of rolling a 6? Compare it to the theoretical probability of 1/6 ≈ 0.167. How close were you?

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Z-Table