Which of the following correctly states the two requirements for a discrete probability distribution?

In probability theory, what is the main difference between an $\mathrm{outcome}$ and an $\mathrm{event}$?

In a study, the mean height of all students in a university is calculated using the heights of every student. Is this value a parameter or a statistic?

In the context of probability, which of the following best describes the difference between a $\mathrm{marginal}$ distribution and a $\mathrm{conditional}$ distribution?

Which of the following is an example of a variable measured on the $nominal$ scale?

$\text{Which of the following is an example of nominal data?}$

Which of the following is true of the exponential smoothing coefficient $\alpha$ in time series forecasting?

In the context of basic probability and statistics, which type of monitoring methodology is designed to detect statistical deviations from a baseline?