Leo Conducts a Study in Which He Relates Gestational Age

question 57

Multiple Choice

Leo conducts a study in which he relates gestational age at birth (e.g., 38 weeks, 39 weeks, etc.) to the degree of attention deficit symptoms. He finds that the lower the gestational age at birth, the higher the degree of attention deficit. This relationship, which is moderate in strength, is best characterized by which of the following correlations?

• A) r = +1.00
• B) r = +.65
• C) r = -1.00
• D) r = -.45

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Definitions:

Correlation Coefficients

Statistical measures that quantify the strength and direction of the linear relationship between two variables, ranging from -1 (perfect negative correlation) to 1 (perfect positive correlation).

Latin Hypercube Sampling

A statistical method for generating a sample of plausible collections of parameter values from a multidimensional distribution.

Monte Carlo Forecasting

A technique using random sampling and statistical modeling to predict outcomes in complex systems or processes.

Monte Carlo Simulation

A computational algorithm that uses repeated random sampling to obtain numerical results, typically used to assess risk or uncertainty in prediction and forecasting models.