The sum of all probabilities in a discrete probability distribution is always ________.
- 0
- 1
- Negative
- Variable
For a discrete random variable, the sum of all probabilities must equal to 1. This is because it represents a complete enumeration of all possible outcomes of the random variable, which together encompass all possibilities.
Loading...
Related Quiz
- How is 'K-means' clustering different from 'hierarchical' clustering?
- How does changing the units of measurement affect the standard deviation and variance of a dataset?
- The type of factor analysis in which the researcher assumes that all variance in the observed variables is common variance is known as _______ factor analysis.
- What is heteroscedasticity in the context of residual analysis?
- The range of a dataset is sensitive to _______.