A Set of N = 15 Pairs of Scores (X

question 62

Multiple Choice

A set of n = 15 pairs of scores (X and Y values) produces a correlation of r = 0.40.If each of the X values is multiplied by 2 and the correlation is computed for the new scores,what value will be obtained for the new correlation?

• A)r = 0.20
• B)r = 0.40
• C)r = 0.80
• D)Cannot be determined without knowing all the X and Y scores

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Definitions:

Exponentially Distributed

A type of probability distribution that describes the time between events in a process where events occur continuously and independently at a constant average rate.

Random Variable

A variable, the value of which hinges on the happenings related to a chance occurrence.

Exponential Distribution

A probability distribution used to model the time between events in a Poisson process, characterized by its constant rate.

Parameter

A numerical characteristic of a population, such as its mean or standard deviation, that is usually unknown and estimated from sample data.