Find the Variance for the Given Data $$\begin{array} { l l l l l } 16 & 7 & 7 & 18 & 8\end{array}$$

question 31

Multiple Choice

Find the variance for the given data. Round your answer to one more decimal place than the original data.
-Jeanne is currently taking college zoology. The instructor often gives quizzes. On the past five quizzes, Jeanne got the following scores: $$\begin{array} { l l l l l } 16 & 7 & 7 & 18 & 8\end{array}$$

• A) 28.6
• B) 28.7
• C) 54.8
• D) 23.0

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Definitions:

Least Squares Line

A line of best fit determined by minimizing the sum of squares of the differences between observed values and the values predicted by the line.

Sample Regression Line

A line of best fit through a scatterplot of sample data points in regression analysis, used to estimate the relationship between variables.

Correlation Coefficient

A statistical measure that quantifies the degree to which two variables vary together.

Sample Coefficient

A numerical measure that describes some characteristic or aspect of a sample of data.