Katelyn Runs Along the Aisle of a Train That Moves

question 68

Multiple Choice

Katelyn runs along the aisle of a train that moves at 8 m/s. Her speed relative to the floor is 3 m/s. Her speed relative to an observer at rest on the ground is

• A)5 m/s.
• B)11 m/s.
• C)either depending on her running direction
• D)none of the above

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Definitions:

Standard Deviation

A statistical measure that quantifies the dispersion or spread of a set of data points.

Variance

A statistical measure of the dispersion of a set of data points in a data set.

Deviations

The differences between observed values and the average of those values within a dataset.

Mean

The arithmetic average of a set of numbers, calculated as the sum of all values divided by the count of values.