The number of ships to arrive at a harbour on any given day is a random variable represented by X. The probabilities for the values of X are tabled below: (X=x) 5 6 8 12 13 15 P(x) 0.150 0.125 0.268 0.305 0.132 0.020 Calculate the expected value and variance (rounded off to three decimals).
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.
The number of ships to arrive at a harbour on any given day is a random variable represented by X. The
probabilities for the values of X are tabled below:
(X=x) 5 6 8 12 13 15
P(x) 0.150 0.125 0.268 0.305 0.132 0.020
Calculate the expected value and variance (rounded off to three decimals).
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