In Old Age

question 108

Multiple Choice

In old age:

• A) human brains are about the same weight as in adolescence.
• B) human brains have increased in weight by 5 percent.
• C) the brain shrinks only in people who have suffered from disease or injury.
• D) human brains have lost about 5 percent of their weight.

---

Definitions:

Marital Status

A demographic characteristic relating to an individual's state of marriage, such as single, married, divorced, or widowed.

Wilcoxon Rank Sum Test

A non-parametric test that assesses whether two independent samples come from the same distribution, particularly useful when the data does not meet the criteria for a t-test.

Wilcoxon Rank Sum

A non-parametric test used to compare two independent samples to determine whether their populations have different median values.

Tied Observations

Instances in data where two or more subjects have exactly the same value for a particular variable.