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質問 # 45
A Data Analyst has a large data source that contains more than 10 million rows. Users can filter the rows by a field named Animal.
The following is a sample of the data.
The analyst wants to ensure that every calculation is affected by including only animals of a particular type.
Which type of filter should the analyst create on the worksheet?
正解:B
質問 # 46
You create the following story that contains two story point.
You want to change the story point format to show the current story point number out of the total number of story points.
Which Layout option should you use?
正解:C
解説:
To change the story point format to show the current story point number out of the total number of story points, you should use the Numbers option in the Layout tab. This option will display the story points as numbers in a horizontal or vertical sequence, such as 1/2, 2/2. You can also choose to show or hide the next and previous arrows for navigation. The Numbers option will help you indicate the progress and order of your story points more clearly than the other options. References:
* Creating a Story - Tableau
* New in 9.0: Formatting the Story Points Navigator - Tableau
* Tableau Certified Data Analyst Study Guide
質問 # 47
You have the Mowing two tables that contains data about the books in a library.
Both tables are incomplete so there are books missing from the tables.
You need to combine the tables. The solution must ensure that all the data is retained Which type of join should you use?
正解:D
解説:
To combine the two tables that contain data about books in a library and ensure that all the data is retained, you should use a full outer join. A full outer join is a type of join that returns all rows from both tables, regardless of whether there is a match or not. If there is no match, null values are filled in for the missing fields.
To perform a full outer join, you need to do the following steps:
* Connect to both tables as your data sources in Tableau. You can use either live or extract connections.
* Drag one table to the canvas and drop it on top of another table. This will create a join between them based on a common field.
* Click on the join icon between the tables and select Full Outer Join from the drop-down list. This will change the join type to full outer join and show all rows from both tables.
* Optionally, you can add or remove join clauses by clicking on Add or Remove buttons next to each clause. You can also change or rename fields by clicking on them.
The other types of joins are not correct for this scenario. An inner join returns only the rows that have a match in both tables, which will exclude any books that are missing from either table. A left join returns all rows from the left table and only the matching rows from the right table, which will exclude any books that are only in the right table. A right join returns all rows from the right table and only the matching rows from the left table, which will exclude any books that are only in the left table. References: https://help.tableau.com
/current/pro/desktop/en-us/joining_tables.htm https://help.tableau.com/current/pro/desktop/en-us/join_types.
htm
When combining two datasets that are both incomplete and where it's important to retain all data from both sources, a full outer join is appropriate. This type of join ensures that all records from both tables are included in the combined dataset, even if there are no matching records in the other table.
質問 # 48
A Data Analyst plans to add a top N filter.
Which field type should the analyst use to filter by in the top N filter?
正解:B
解説:
A Top N filter is applied to categorical members, so the field being filtered should be a discrete dimension.
When a discrete dimension is placed on the Filters shelf in Tableau Desktop, the Filter dialog provides General, Wildcard, Condition, and Top tabs. The Top tab can then retain the top or bottom N members based on an aggregate measure, such as the top 10 customers by SUM(Sales). A continuous measure uses quantitative range filtering rather than the dimension-member Top interface. A table calculation is evaluated later in Tableau's order of operations and is not the field type used to configure a standard Top N dimension filter. A set can itself be defined using a Top rule, but it is a separate object rather than the required field type for this filter. Therefore, C is correct.
質問 # 49
in which three formats can you export a worksheet from the Worksheet menu? Choose three
正解:D、E、F
解説:
Tableau provides various options to export data from a worksheet. The formats available are typically those that are best suited for visualization or further data analysis. The options include:
* .png for exporting images of the visualizations
* .xlsx for exporting data in a format that can be opened with Microsoft Excel
* .pptx for creating PowerPoint presentations with the visualization embedded These formats are designed to facilitate sharing and presenting the insights derived from Tableau visualizations, or for conducting further analysis in tools like Excel.
質問 # 50
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今日、激しい競争の時代に、才能が飽和している市場でどのように位置を占めることができますか?答えは証明書です。証明書の主なものは何ですか?あらゆる種類の試験Analytics-DA-201認定、あらゆる種類の資格認定を通してあなたを証明します。見つけるのは難しくありません。より多くの人々がAnalytics-DA-201試験ガイドに時間と労力を割いて喜んでいます。Analytics-DA-201認定は簡単なものではないため、多くの人が効率的な学習方法を探しています。Analytics-DA-201試験の質問は、Analytics-DA-201試験に合格するための適切なツールです。
Analytics-DA-201テスト参考書: https://www.jptestking.com/Analytics-DA-201-exam.html
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