Frank's Algebra Grade Is Based on the Average of Four

question 31

Multiple Choice

Frank's algebra grade is based on the average of four exams, which will count equally. His grades are 85, 70, 70 and 85. Find his average.

• A) 72.5
• B) 77.5
• C) 82.5
• D) 92.5
• E) 87.5

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Definitions:

Variances

A measure of the dispersion or spread of a set of data points, calculated as the average of the squared differences from the mean.

Least Squares Line

A line of best fit determined by minimizing the sum of the squares of the vertical distances of the points from the line.

Weight

A measure of the heaviness of an object; in statistics, it refers to the emphasis or importance assigned to elements of a dataset.

Height

The measurement of an object or point in relation to ground level or a base level, typically considered vertical distance.