A Statistical Technique Called Individual Fixed Effects Is Sometimes Used

question 38

Multiple Choice

A statistical technique called individual fixed effects is sometimes used in the social sciences.This technique involves:

• A) comparing a particular outcome across time as some factor changes.
• B) comparing two groups of subjects who are similar in all respects except that only one of the groups has experienced the independent variable.
• C) determining which factor accounts for a particular effect.
• D) comparing key variables that resist fixed effects across populations.

Understand the distinction between parametric and nonparametric statistical tests.

Learn the basic steps and requirements for performing a Wilcoxon rank sum test.

Know the conditions under which nonparametric tests are preferred over parametric tests.

Comprehend how the Wilcoxon rank sum test operates with ordinal or interval but non-normally distributed data.

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Definitions:

Strabismus

A condition where the eyes do not properly align with each other when looking at an object, commonly known as crossed eyes.

Binocularity

The ability of both eyes to work together to achieve a single, coherent image and perceive depth.

Red Reflex

A bright reflection from the back of the eye when a light is shone into it, often observed during eye exams.

Apgar Score

A quick test performed on a newborn at 1 and 5 minutes after birth to assess the baby's heart rate, muscle tone, reflexes, skin color, and breathing effort.