The Components of Internal Validity Are A $R ^ { 2 }$

question 28

Short Answer

The components of internal validity are a. a large sample, and BLUE property of the estimator.
b. a regression $R ^ { 2 }$ above $0.75$ and serially uncorrelated errors.
c. unbiasedness and consistency of the estimator, and desired significance level of hypothesis testing.
d. nonstochastic explanatory variables, and prediction intervals close to the sample mean.

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Definitions:

Electrode

A conductor through which electricity enters or leaves an object, substance, or region in electrical systems or devices.

ECG

An abbreviation for Electrocardiogram, a medical test that measures the electrical activity of the heart to assess its health and detect any abnormalities.

Color Code

A system of identification that uses different colors to represent specific information, often used in settings like hospitals to quickly convey medical alerts or in industries for safety.

ECG Tracings

Recordings of the electrical activity of the heart measured during an electrocardiogram (ECG) test.