Line of Best Fit Practice - Jack Nilan



Bridgeport Math Algebra 1 Line of Best Fit Test

Name ______________________

| |

|1 The following table has height |

|in inches and weight |

|Height Weight |

| |

|10 |

|15 |

| |

|12 |

|20 |

| |

|14 |

|24 |

| |

|15 |

|24 |

| |

|15 |

|28 |

| |

|17 |

|32 |

| |

|18 |

|31 |

| |

|19 |

|33 |

| |

| |

| |

|Label the x axis for height and |

|Y axis (go by 5’s) for weight. Plot points – |

|Draw line of best fit |

| |

|Equation - _______________________________________ |

|2 Tree Age and Height (in feet) |

| |

|x y |

| |

|1 |

|2 |

| |

|1 |

|3 |

| |

|2 |

|4 |

| |

|3 |

|6 |

| |

|3 |

|8 |

| |

|4 |

|6 |

| |

|5 |

|8 |

| |

|6 |

|10 |

| |

| |

| |

|Label the x axis for age and y axis for height. Plot points. Draw line of best fit. |

| |

|Equation __________________________ |

| |

| |

| |

|3 Time and distance walked |

|x y |

| |

|0 |

|0 |

| |

|1 |

|2 |

| |

|2 |

|3 |

| |

|2.5 |

|4 |

| |

|3 |

|6 |

| |

|3 |

|5 |

| |

|5 |

|7 |

| |

|7 |

|9 |

| |

| |

|Plot points – Draw line of best fit. |

| |

|Equation |

| |

|______________________ |

| |

| |

| |

|4 Miles Driven – Gas in Tank |

| |

|Miles Gallons |

| |

|0 |

|15 |

| |

|20 |

|13 |

| |

|35 |

|12 |

| |

|40 |

|11 |

| |

|45 |

|10 |

| |

|55 |

|8 |

| |

|70 |

|6 |

| |

|80 |

|3 |

| |

| |

|Plot points (x axis miles driven – go by 10), y axis gallons (go by 3). Draw line of best fit. |

| |

|Equation |

| |

|_____________________ |

| |

| |

| |

| |

|5 Money in checking account |

| |

|Day Money |

| |

|0 |

|300 |

| |

|1 |

|270 |

| |

|3 |

|200 |

| |

|4 |

|170 |

| |

|5 |

|145 |

| |

|7 |

|80 |

| |

|8 |

|40 |

| |

|9 |

|0 |

| |

| |

| |

|Plot points (x axis days – y axis Money in bank account (go by 50)). Draw line of best fit. |

| |

|Equation |

| |

|____________________________ |

| |

| |

|6 Years of College and Income (in thousands) |

| |

|Years Income |

| |

|0 |

|20 |

| |

|1 |

|24 |

| |

|3 |

|30 |

| |

|5 |

|40 |

| |

|6 |

|60 |

| |

|7 |

|80 |

| |

|8 |

|90 |

| |

| |

| |

| |

| |

|Plot points – x axis years and y axis income (go by 10’s). draw line of best fit. |

| |

|Equation |

| |

|_________________________ |

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