An Increase in Earthquake Magnitude by One Whole Number (For

question 46

Multiple Choice

An increase in earthquake magnitude by one whole number (for example, from 6 to 7) means that the energy released has increased by a factor of about ____.

• A)10
• B)30
• C)200
• D)1,000

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Definitions:

Mean

The average value of a set of numbers, calculated by dividing the sum of all the numbers by the count of the numbers.

Standard Error

The usual measure of spread for the distribution that arises from sampling, typically concerning the mean.

Confidence Interval

A range of values that is used to estimate the true value of a parameter with a certain degree of confidence.

Sample

A subset of a population selected for measurement, observation, or questioning to provide statistical information about the whole.