Free TDS-C01 Exam Braindumps (page: 24)

Page 23 of 56

Using the CoffeeChain table, create a crosstab showing the Total Expenses per State and add Column Grand Totals to the view. Now group the states of New York, California and Washington. What percent of the total sales does this group contribute?

  1. 25.79%
  2. 23.39%
  3. 27.73%
  4. 29.49%

Answer(s): C

Explanation:

We need to use the concept of Groups for this question.
Follow along:

1) First, Drag State to the Rows shelf, and Total Expenses to the Text Mark on the Marks Shelf:


2) Now, remove the SUM aggregation from Total Expenses, and add a quick table calculation -> Percent of total:


3) Next, Select the States of New York, California and Washington -> And then click the paperclip icon:


We can see the answer already : 23.386% in the view above (even before grouping!)

4) Finally, we get the following view and our answer:



Using the CoffeeChain table, create a chart to see the monthly Percent difference change in Profit, from the beginning of 2012 to the end of 2013. How many months saw a Negative percent difference in Profit?

  1. 9
  2. 7
  3. 10
  4. 8

Answer(s): C

Explanation:

Follow along to reach the correct answer:

1) First, drag Date to the Column shelf and Profit to the Rows shelf. We need to see the 2 consecutive months over this two year period (2012-2013) so this tells us we need to work with continuous dates:

Click on Date in the Column shelf and convert it to continuous month :


2) Now, click on the Profit pill in the Rows shelf, go to quick table calculation and choose Percent difference:


3) Finally, click on the Show mark Labels icon:

4) We finally have our view, and clearly, 10 Months have a NEGATIVE percent difference:



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?

  1. 0.783262
  2. 0.739284
  3. 0.759329
  4. 0.748472

Answer(s): 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:



For a ____________ sort, no matter how the data changes, the values will always stay in the sort order we kept stuff in.

  1. Random
  2. Manual
  3. Topological
  4. Hierarchical

Answer(s): B

Explanation:

For a manual sort, no matter how the data changes, the values will always stay in the sort order you kept stuff in.
From the official website:


Reference:

https://help.tableau.com/current/reader/desktop/en-us/reader_sort.htm






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