What Has Research to Date Indicated About the Use of Cellphones

question 29

Multiple Choice

What has research to date indicated about the use of cellphones and the risk of brain cancer?

• A) Cancer risk is unclear.
• B) Cancer risk varies with gender.
• C) Cancer risk varies with age of the cellphone.
• D) Cancer risk varies with amount of usage.

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Definitions:

T-test

A statistical test used to determine if there is a significant difference between the means of two groups, which may be related in certain features.

Regression Line

A straight line in a scatter plot that best represents the relationship between two variables, typically used in linear regression analysis to predict values.

Standard Error

A statistical measure that represents the accuracy with which a sample distribution represents a population, particularly the variability in an estimated mean.

Parsimony

The principle of using the simplest or least complicated explanatory means necessary to adequately account for observed phenomena, often used in model selection.