The Following Table Shows the Values of the Number of Gallons

question 36

Multiple Choice

The following table shows the values of the number of gallons of water used by a family during the month of July.
Find the linear regression equation based on the data provided to determine the number of gallons of water used on day 10. (Rounded to the nearest hundredth)

• A) 12.50 gallons
• B) 7.13 gallons
• C) 13.66 gallons
• D) 8.50 gallons
• E) 11.01 gallons

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Definitions:

Quartiles

Divisions of a data set into four equal parts, representing the distribution of values within the data set.

Sample Z-score

A measure indicating the number of standard deviations a data point is from the mean of its sample.

Standard Deviation

A gauge for assessing the extent of scatter among numbers in a group.

Boxplot

A graphical representation of data points that displays the distribution's quartiles, median, and potential outliers.