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| Section | Objectives |
|---|---|
| Topic 1: Sharing Insights | - Dashboards
|
| Topic 2: Exploring and Analyzing Data | - Basic calculations
|
| Topic 3: Understanding Tableau Concepts | - Core Tableau terminology
|
| Topic 4: Connecting to Data | - Data preparation basics
|
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質問 # 25
What are three geographic roles that a Tableau associate can assign to a field?
正解：A、B、E
解説：
The supported choices are Country, Airport, and City, making A, B, and D correct. A geographic role tells Tableau how the values in a field should be interpreted geographically. Once Tableau recognizes the role, it can associate those values with built-in geocoding information and generate geographic fields such as Latitude (generated) and Longitude (generated) for map creation. Tableau's supported location data includes countries and regions, cities, states and provinces, postal codes, airport codes, and several other standardized geographic structures. Country and City are therefore standard geographic roles. Tableau also supports worldwide airport codes, enabling fields containing appropriate airport identifiers to be interpreted geographically. A general street Address is not one of the standard built-in geographic roles represented by the answer set. Exact street-address mapping normally requires appropriate coordinate information, spatial data, custom geocoding, or another supported technique. Time zone likewise is not a standard geographic role used by Tableau's built-in geocoding model. The distinction matters because assigning an unsupported semantic category does not automatically give Tableau coordinates. Official Tableau Desktop mapping guidance specifically identifies countries, cities, airport codes, and other supported geographic location categories for map creation.
質問 # 26
A Tableau associate has the following data.
The associate wants to sort each category's sub-category by ascending sales.
Which sort option should the associate use?
正解：B
解説：
The correct option is Nested because the Sub-category members must be sorted independently within each Category based on Sales. A nested sort evaluates the measure separately inside each pane or parent dimensional grouping. In this example, the Home sub-categories should be sorted according to their Home Sales values, while the Bath sub-categories must be sorted independently according to the Bath Sales values.
For Home, Bulk has Sales of $50 and Accessory has $60, so ascending order is Bulk followed by Accessory.
For Bath, Accessory has $45 and Bulk has $75, so ascending order is Accessory followed by Bulk. This demonstrates why a single global ordering is insufficient: the correct Sub-category order differs between the two Category groups. A non-nested field sort can produce a consistent order based on aggregated values across the view, which would not satisfy the requirement to rank Sub-category independently inside each Category. Manual sorting would require explicit maintenance, while data source order simply follows the ordering supplied by the underlying source. Tableau's official sorting documentation states that nested sorting considers values independently per pane and sorts the values separately within those panes.
質問 # 27
Which type of chart can a Tableau associate create without using a dimension?
正解：C
解説：
A basic bar chart can be created from a measure without requiring a dimension, making A correct. Tableau can construct an initial visualization automatically when a field is double-clicked in the Data pane. Official Tableau documentation demonstrates that double-clicking a quantitative measure such as Profit automatically adds it to the view and creates a bar chart. At this stage, no dimension is required; Tableau displays the aggregated value of the measure as a single bar. The remaining visualization types fundamentally depend on categorical partitioning. A highlight table uses dimensions to establish the table's row and column structure and measures to encode values through color or text. A treemap normally requires one or more dimensions to define individual rectangles, with measures controlling properties such as size and color. A stacked bar requires a categorical field to partition a bar into multiple stacked segments. A dimension can certainly be added later to a basic bar chart-for example, Category on Columns and Sales on Rows-to produce multiple bars. However, the question asks which visualization can be created without a dimension. Tableau's official field-dragging documentation specifically demonstrates that double-clicking a measure alone produces an automatic bar chart.
質問 # 28
Which aggregation is available without requiring a table calculation or calculated field?
正解：B
解説：
Standard deviation is available as a native aggregation for a measure and does not require the author to create either a table calculation or a calculated field. Therefore, C is correct. When a measure is used in a Tableau view, its aggregation can be changed through the field menu. In addition to commonly used functions such as SUM, AVG, MIN, MAX, and COUNT, Tableau provides Standard Deviation and Standard Deviation (Population) as built-in aggregation choices. The calculation is performed directly over the records contributing to the current mark. Running Total and Percent of Total are different because they are table calculations. They operate on already aggregated values after Tableau has constructed the visualization and depend on the addressing and partitioning of the view. Sample covariance is supported through calculation functionality such as covariance functions but is not presented as the equivalent direct aggregation option in the basic measure aggregation menu represented by this question. Implementing covariance typically involves specifying the two expressions whose covariance is required. Tableau's official Data Aggregation documentation explicitly lists standard deviation among the aggregations available for measures, including sample and population forms. Consequently, it can be selected directly without constructing an additional calculated field or applying a quick table calculation.
質問 # 29
Which two statements accurately describe a visualization animation?
正解：A、C
解説：
Tableau visualization animations can use either a Simultaneous or Sequential animation style, and their analytical purpose is to make changes in the data easier to perceive. Therefore, A and D are correct. Under Format > Animations, Tableau provides two animation styles. With Simultaneous, all applicable transitions occur at the same time. With Sequential, Tableau stages the transition-for example, fading marks, moving or sorting them, and then displaying the updated state. This directly confirms option A. Animations are particularly useful when filters, sorts, parameters, or other changes alter the position or composition of marks.
Instead of immediately replacing one static state with another, the transition helps a viewer understand how the marks changed, making patterns, movements, and differences easier to track. This supports D. The Pages shelf is a separate Tableau feature for stepping through members of a field and can create a sequence of views, but it does not define visualization animations themselves. Likewise, animation is a workbook/sheet formatting capability rather than a feature specifically defined by map visualization usage. Tableau's official Animations documentation identifies Simultaneous and Sequential as the available animation styles and describes animations as a mechanism for visually communicating changes in the view.
質問 # 30
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