The ________ of a random variable is the sum of the probabilities of all possible outcomes.
- Distribution
- Expected value
- Mean
- Variance
The "expected value" of a random variable is the sum of all possible values it can take, each multiplied by the probability of that outcome. It gives us the mean or average value of the random variable and is a fundamental concept in probability theory and statistics.
Loading...
Related Quiz
- What are the two branches of statistics?
- The sum of all probabilities in a discrete probability distribution is always ________.
- If the Kruskal-Wallis H test is significant, it is often followed up with ________ to find which groups differ.
- Can you provide a practical example of where the Law of Large Numbers is applied?
- Spearman's Rank Correlation is based on the ________ of the data rather than their raw values.