A Standard Deviation of 2 Is a Percentile Rank of About

question 38

True/False

A standard deviation of 2 is a percentile rank of about 98.

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Definitions:

Sampling Error

The error that occurs when the sample selected does not perfectly represent the population, leading to inaccuracy in results or conclusions.

Confidence Interval

A range of values derived from sample data that is likely to contain the true population parameter with a certain level of confidence.

Regular Exercise Program

A consistent routine or schedule of physical activities designed to improve or maintain physical fitness and health.

Margin of Error

An expression of the amount of random sampling error in a survey's results, indicating a confidence interval within which the true population parameter is expected to lie.