Probability Formula:
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Definition: This calculator computes the probability of an event occurring in a simple random sample, where each outcome has an equal chance of being selected.
Purpose: It helps determine the likelihood of specific outcomes in random sampling scenarios, useful in statistics, research, and probability studies.
The calculator uses the basic probability formula:
Where:
Explanation: The probability is calculated by dividing the number of favorable outcomes by the total number of possible outcomes.
Details: Understanding probability helps in making informed decisions, assessing risks, and interpreting statistical results in various fields including science, business, and social research.
Tips: Enter the number of favorable outcomes (must be ≥ 0) and total outcomes (must be ≥ 1). The favorable outcomes cannot exceed total outcomes.
Q1: What's the difference between probability and percentage?
A: Probability is a value between 0 and 1, while percentage is probability multiplied by 100 (0% to 100%).
Q2: Can probability be greater than 1?
A: No, probability values range from 0 (impossible) to 1 (certain). Values outside this range indicate invalid inputs.
Q3: What if my favorable outcomes exceed total outcomes?
A: The calculator will not compute in this case as it's mathematically impossible (k must be ≤ N).
Q4: How is this different from conditional probability?
A: This calculates simple probability. Conditional probability considers additional constraints or prior events.
Q5: Can I use decimals for outcomes?
A: While the calculator accepts decimal inputs, outcomes are typically whole numbers in probability theory.