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Probability Basics Video Lecture | Quantitative Aptitude (Quant) - CAT

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FAQs on Probability Basics Video Lecture - Quantitative Aptitude (Quant) - CAT

1. What is probability and how is it calculated?
Ans. Probability is a measure of the likelihood that a particular event will occur. It is calculated by dividing the number of favorable outcomes by the total number of possible outcomes.
2. What is the difference between theoretical probability and experimental probability?
Ans. Theoretical probability is based on mathematical calculations and assumes that all outcomes are equally likely. Experimental probability, on the other hand, is based on actual observations or experiments and may vary from the theoretical probability.
3. How can probability be expressed?
Ans. Probability can be expressed as a fraction, a decimal, or a percentage. For example, the probability of rolling a six on a standard six-sided die can be expressed as 1/6, 0.1667, or 16.67%.
4. What is the addition rule of probability?
Ans. The addition rule of probability states that the probability of the union of two events occurring is equal to the sum of their individual probabilities, minus the probability of their intersection. It can be represented as P(A or B) = P(A) + P(B) - P(A and B).
5. What is the difference between independent and dependent events in probability?
Ans. Independent events are events that do not affect each other's probability. The outcome of one event does not influence the outcome of the other. Dependent events, on the other hand, are events where the outcome of one event does affect the outcome of the other. The probability of the second event is influenced by the outcome of the first event.
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