Find the Number of Standard Deviations from the Mean

question 78

Multiple Choice

Find the number of standard deviations from the mean. Round your answer to two decimal places.
-The number of hours per day a college student spends on homework has a mean of 6 hours and a standard deviation of 1.25 hours. Yesterday she spent 3 hours on homework. How many standard deviations from the
Mean is that?

• A) 2.40 standard deviations above the mean
• B) 1.20 standard deviations above the mean
• C) 1.20 standard deviations below the mean
• D) 2.40 standard deviations below the mean

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Definitions:

Values

Principles, standards, or qualities considered inherently important or desirable in a certain context.

Correlation Analysis

A statistical method used to evaluate the strength and direction of the linear relationship between two quantitative variables.

Scatter Diagram

A graphical representation used to visualize the relationship between two quantitative variables.

Regression Line

A line plotted through the scatter plot of data points that best expresses the relationship between those points, typically used in linear regression.