A fair coin is flipped twice. If both flips come up heads, you lose $6. If at least one flip comes up tails, you win $2. Let X be the random variable that corresponds to your winnings in dollars. Ex: X = 2 if you win $2 and X = -2 if you lose $2. What is the expected value of X? E[X] = ____
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.
A fair coin is flipped twice.
If both flips come up heads, you lose $6.
If at least one flip comes up tails, you win $2.
Let X be the random variable that corresponds to your winnings in dollars. Ex: X = 2 if you win $2 and X = -2 if you lose $2. What is the expected value of X?
E[X] = ____
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