If You Were to Do One Thing That Would Give

question 42

Multiple Choice

If you were to do one thing that would give you the best chance of avoiding or limiting normal, age-related declines in brain functioning, that would be:

• A) engaging in complex cognitive tasks on a regular basis
• B) sleeping longer than normal
• C) sleeping less than normal
• D) trying not to "over-tax" the brain by thinking too hard or too long on difficult problems

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Definitions:

Stocks

Financial instruments representing ownership interests in corporations, providing holders with a claim on part of the corporation's assets and earnings.

Mean

The arithmetic average of a set of numbers, calculated by adding them all up and dividing by the count of the numbers.

Variance

The average of the squared differences from the Mean, providing a measure of how spread out a data set is.

Expected Value

The weighted average of all possible values that a random variable can take on, weighted by the probabilities of those values.