A weighted average of the value of a random variable, where the probability function provides weights is known as

Select one:

a. a random variable.b. the expected value.c. a probability function.d. random function.

Question 37

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When the assumption of equally likely outcomes is used to assign probability values, the method used to assign probabilities is referred to as the

Select one:

a. relative frequency method.b. probability method.c. classical method.d. subjective method.

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A random variable that can assume only a finite number of values is referred to as a/an

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a. infinite sequence.b. finite sequence.c. discrete probability function.d. discrete random variable.

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A histogram is said to be skewed to the left if it has a

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a. longer tail to the left.b. shorter tail to the left.c. longer tail to the right.d. shorter tail to the right.

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Which of the following is a measure of dispersion?

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a. Interquartile rangeb. Standard deviationc. All of the above are measures of dispersion.d. Quartiles