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Question 45 - TDS-C01 discussion

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Question 30: Skipped

Using the CoffeeChain table, create a scatter plot of Profit (x-axis) vs Sales (y-axis) broken down by State. Add a Linear trend line to the view. What is its R-squared value?

A.
0.783262
Answers
A.
0.783262
B.
0.739284
Answers
B.
0.739284
C.
0.759329
Answers
C.
0.759329
D.
0.748472
Answers
D.
0.748472
Suggested answer: A

Explanation:

Trend lines have become popular questions in recent Tableau examinations. Follow along:

1) First drag Sales to the Rows shelf and Profit to the Columns shelf:

You will only see a single mark since the view is aggregated.

2) Now, break down this view by state. Drag State into Detail on the Marks shelf ( or directly to the view):

3) Finally, move to the Analytics pane, and drag Trend line to the view. When you drag it, select the Linear option!:

4) The following is our view. Hover over the trend line to see the R-squared value:

asked 23/09/2024
Anthony Zaborski
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