Statistics and Probability

The variance of $5, 10, 15$ is:

Which measure of dispersion is calculated in the same units as the mean?

If $SD(x) = 3$, what is $SD(2x + 5)$?

If the standard deviation of a population is $8$, what is the variance?

Calculate the mean deviation about the mean for: $5, 5, 5, 5$.

The Coefficient of Variation is used to compare:

If $P(A) = 0.2, P(B) = 0.3, P(C) = 0.4$ and $A, B, C$ are mutually exclusive events, then $P(A \cup B \cup C)$ is:

The collection of all subsets of a sample space $S$ is called the:

If $P(A) = 0.7$, then $P(A \cap S)$ is:

In the experiment of rolling a die, if $E = \{2, 4, 6\}$, then $E$ is a/an:

Which of these is the correct expression for $P(A \cap B')$?

If $P(A) = \frac{1}{3}$ and $P(B) = \frac{1}{4}$, and $A$ and $B$ are mutually exclusive, what is $P(A \cup B)$?

If $b_{yx}$ and $b_{xy}$ are both greater than zero, then $r$ must be:

If the covariance between $X$ and $Y$ is zero, then the variables are:

In the regression equation $Y = 10 - 1.5X$, the value of the slope is: