UCSS Math I 4.2.3 Example 2

Lindsay created the table below showing the population of fruit flies over the last 10 weeks. She estimates that the population of fruit flies can be represented by the equation [math]y = 46x – 40[/math]. Using residuals, determine if her representation is a good estimate.

[list=1] [*]Find the estimated population at each [i]x[/i]-value. [*]Evaluate the equation at each value of [i]x[/i]. [*]Find the residuals by finding each difference between the observed population and estimated population. [*]Create a residual plot. [*]Analyze the residual plot to determine if the equation is a good estimate for the population. [/list] This applet is provided by Walch Education as supplemental material for the [i]UCSS Secondary Math I[/i] program. Visit [url="http://www.walch.com"]www.walch.com[/url] for more information on our resources. [i]Note[/i]: This applet is best viewed in HTML5. To switch views, click "View as HTML5 Applet" at the bottom of the page.