The Number of Gallons of Water Remaining in a Pool

question 336

Multiple Choice

The number of gallons of water remaining in a pool t hours after it began to drain is illustrated in the table below. What is the first difference of the number of gallons of water?

• A) -2121
• B) 2121
• C) 424.2
• D) -424.2
• E) 5

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Definitions:

Standard Deviation Units

Units of measurement used to express the variability or dispersion of a set of data points around their mean in terms of the standard deviation.

Cohen's D

A measure of the size of an effect or difference between two group means, expressed in standard deviation units.

Variance

A measure of how much values in a data set differ from the mean of the set.

Cohen's D

Cohen's d is a statistic used to quantify the difference between two means, measured in standard deviations.