If a Weather Centre Monitors and Calculates the Number of Lightning

question 15

Multiple Choice

If a weather centre monitors and calculates the number of lightning flashes per 100 square kilometres for Edmonton, Alberta each year, what type of variable would they be investigating?

• A) random variable
• B) controlled variable
• C) isolated variable
• D) weather variable

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Definitions:

Standard Deviation

An estimator for the amount of disparity or spread found in a set of numerical values.

Sample Mean

The average value of a subset of a larger population, used to estimate the population mean.

Finite Population Correction

A statistical adjustment applied when sampling without replacement from a finite population, to improve the accuracy of estimates like means and proportions.

Standard Error

A statistic that measures the dispersion of sample means around the population mean, often used to estimate the accuracy of a sample mean compared to the actual population mean.