People with Depression Move to Which Stage of Sleep More

question 141

Multiple Choice

People with depression move to which stage of sleep more quickly than normal?

• A) I
• B) II
• C) III
• D) REM

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Definitions:

Wilcoxon Signed Rank Test

A non-parametric statistical test that compares two related samples or repeated measurements on a single sample to assess whether their population mean ranks differ.

Test Statistic

A calculated value that is used in statistical testing to decide whether to reject the null hypothesis, based on the possible values it can take in relation to a theoretical distribution.

Rank Sums

A statistic used in non-parametric tests that involves summing the ranks of observations in samples.

Standardized Test Statistic

A calculated value from sample data that has been transformed to conform to a standard scale, used in hypothesis testing to determine how far a sample statistic differs from what is expected under the null hypothesis.