Which of the following could not be probability distribution?
Contingency Table
A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.
Binomial Distribution
Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.
Which of the following could not be
A valid probability distribution must have all the probabilities lie within 0 and 1 also sum of their probability must be equal to 1.
In Example A,
- Probabilities lies within 0 and 1.
- But their sum is not equal to 1, it exceeds 1.
Thus, Example A could not be a probability distribution.
In Example B,
- Probabilities lies within 0 and 1.
- Their sum is also equal to 1.
Thus, Example B is a probability distribution.
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