Experimental Probability
Experimental probability is the probability found from actual trials by dividing the number of times an event occurs by the total number of trials.
Practice This ConceptMain explanation
Teacher explanation
This probability comes from observed data. It may change when the experiment is repeated more times, especially when the number of trials is small.
Example
If a coin is tossed 50 times and heads appears 28 times, the experimental probability of heads is 28/50.
Simple analogy
Experimental means evidence from trials, not only equal-looking possibilities.
Common confusion
Students often use the theoretical answer 1/2 even when the question gives actual trial results.
Exam tip
If the question says observed, recorded, surveyed, tossed many times, or experiment result, use the given data.
Answer writing and exam use
1-mark use
Write the exact meaning of experimental probability in one clean line.
2-mark use
Define experimental probability and add one example or condition.
3-mark use
Explain experimental probability, show the method or example, and mention the common mistake.
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