Which of the following are compelling reasons to use a Stacked Bar Chart?

• A.To visualize parts of a whole
• B.To easily visualize trends over time
• C.To be able to visualize complex information with fewer bars /
  marks
• D.To visualize each discrete category using a separate bar.

Correct Answer: A,C

Stacked bar charts will usually have lesser number of bars compared to a normal bar chart:
Normal bar chart - 9 bars

Stacked Bar Chart - 3 bars

We can easily see a 'part-of-a-whole' methodology being used here as well - we are seeing the breakdown of Segments within each Category.
To easily visualize trends over time - This is the definition of a line chart.
To visualize each discrete category using a separate bar - This can be accomplished using a simple bar chart, why use a stacked one?

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True or False: LEFT JOIN returns all rows from the left table, with the matching rows in the right table

• A.True
• B.False

Correct Answer: A

Explanation
This is true, indeed!
The LEFT JOIN keyword returns all records from the left table (table1), and the matched records from the right table (table2). The result is NULL from the right side, if there is no match.

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Which of the following can you add a reference line to?

• A.Groups
• B.Calculated Fields
• C.Measures
• D.Dimensions

Correct Answer: B,C

You can add reference lines, bands, distributions, or (in Tableau Desktop but not on the web) box plots to any continuous axis in the view.
Reference Lines - You can add a reference line at a constant or computed value on the axis. Computed values can be based on a specified field. You can also include confidence intervals with a reference line.

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What is created by a calculated field that has a formula of SUM(Sales)/SUM(Profit)?

• A.A parameter
• B.A measure
• C.A dimension
• D.A set

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Which type of date filter can you use to choose a range of dates based on TODAY ()?

• A.Range of dates
• B.Relative dates
• C.Ending date
• D.Starting date

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