If the Slope of a Line That Graphs the Relationship

question 197

Multiple Choice

If the slope of a line that graphs the relationship between variable x and variable y is positive, then we know that

• A) when the value of variable x increases, then the value of variable y decreases.
• B) when the value of variable x decreases, then the value of variable y decreases.
• C) the two variables have an inverse relationship.
• D) the two variables are unrelated.

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Definitions:

Random Variable

A variable whose possible values are numerical outcomes of a random phenomenon.

Poisson Distribution

A discrete frequency distribution which gives the probability of a number of independent events occurring in a fixed time.

Mean

The arithmetic average of a set of numbers, found by dividing the sum of all numbers by the count of numbers.

Discrete Probability Distribution

A statistical function that describes the likelihood of each possible outcome of a discrete random variable occurring.