Question
Asked Jan 17, 2020
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Topsoil The Dirt Guy Topsoil company in Durham, CT, sells (you guessed it) topsoil. It is sold by the “yard,” which is actually a cubic yard, and the variable x is the length (yd) of each side of a cube of topsoil.

x (yd)
4
6.
Cost (dollars)
200
25
675
1600
5400
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x (yd) 4 6. Cost (dollars) 200 25 675 1600 5400

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Expert Answer

Step 1

In this case, we need to construct the scatterplot for linear, quadratic, logarithmic, exponential, and power models. Also, identify mathematical model that best fits the given data.

Step 2

Step-by-step procedure to construct the scatterplot for linear model using the Excel is as follows:

  • Select the column containing X and Cost.
  • Choose Insert > Scatter.
  • In Scatter, choose Scatter with only markers.
  • Select the points in the Scatterplot and then Right click, choose Add Trendline.
  • In the Trendline Options, Select Linear.
  • Check Display Equation on chart and Display R-squared value on chart.

Output using the Excel is given below:

 

Statistics homework question answer, step 2, image 1
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Step 3

Step-by-step procedure to construct the scatterplot for quadratic model using the Excel is as follows:

  • Select the column containing X and Cost.
  • Choose Insert > Scatter.
  • In Scatter, choose Scatter with only markers.
  • Select the points in the Scatterplot and then Right click, choose Add Trendline.
  • In the Trendline Options, S...
Statistics homework question answer, step 3, image 1
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Statistics

Advanced Topics in Statistics

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