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Exam 70-778 topic 1 question 85 discussion

Actual exam question from Microsoft's 70-778
Question #: 85
Topic #: 1
[All 70-778 Questions]

From the Home tab in Power BI Desktop, you click Enter Data and create a table named Sales that contains the following data.

You add Region and Sales to visualization and the visualization displays the following data.

What causes the visualization to display four rows of data instead of six?

  • A. the Data Category of Region
  • B. the Default Summarization on Region
  • C. the Default Summarization on Sales
  • D. the Data Category of Sales
Show Suggested Answer Hide Answer
Suggested Answer: B 🗳️

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SteveKarr
Highly Voted 5 years, 11 months ago
I think the ans should be C. If there is summarization set on Region then the visualization will show count of regions and not in an unsummarized fashion like the source data.
upvoted 41 times
RoryHny
5 years, 11 months ago
Right, in this case it can be undo to the first version by choosing "Don't summarize" on Sales column parameters, which means that Sales is summarize -> Answer C
upvoted 6 times
Hien
5 years, 10 months ago
I agree
upvoted 5 times
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SaeedJei
3 years, 8 months ago
doesn't seem to be right, summarized 'ON' refers to the categories by which we want to make a group https://docs.microsoft.com/en-us/dax/summarize-function-dax
upvoted 1 times
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kyliek7
4 years, 7 months ago
Agree, column cannot be summarised on text field. It can be grouped let's say :) tested
upvoted 1 times
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FrdFrd
4 years, 5 months ago
Agree. Default summarizations are: "Don't Summarize" for Region (because it is text data type) and "Sum" for Sales. If summarization for Sales were set to "Don't Summarize" all rows would show. Thus, correct answer is C
upvoted 1 times
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twane
Highly Voted 5 years, 9 months ago
This sounds like semantics. It is the Sales column which is summarized, but it's summarized based on region. For that reason the answer is B.
upvoted 18 times
Vermonster
5 years, 5 months ago
But it is the Default Summarization: SUM on Sales that causes the figures to be added together. Therefore, answer is C
upvoted 1 times
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Mange
5 years ago
I totally agree.
upvoted 1 times
kyliek7
4 years, 7 months ago
Wrong, summarising can be done only on values...
upvoted 2 times
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Hemantsahu11
Most Recent 1 year, 11 months ago
The correct Answer is C
upvoted 1 times
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dzeri
4 years ago
Ans is B if you create the table yourself, use table visualization and add region only, it will give you the same summary.
upvoted 2 times
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Lhouss
4 years, 6 months ago
C is correct answer.
upvoted 1 times
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Mar_tin
4 years, 7 months ago
B seems to be right. "Summarization" indicates the usage of the "Summarize Function" prior to "Sum function" in the article: https://docs.microsoft.com/en-us/dax/summarize-function-dax is shown, that summarize includes a "groupBy" component which in our example works on the Region column. Logically I assume, that first the Default Summarization (Summarize Function) on Region and then the Sum of Sales is happening. Because if you would have 6 different row entries in Region column in Table 1 you would also have 6 rows in the Table 2.
upvoted 1 times
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CDL
4 years, 7 months ago
my 1st reaction is B, but think deeply, should be C. It’s a English question. Usually we think this way, If in query mind, it must be “Group by” Region and then Aggregator is “Sum” Sales #. Here we go, we “sum” sales #. If in field list mind, we must put “region” in Row field, and put “Sales#” into Value field get a default summarization and it must be a auto sum. Here we go, we get “Sum” of Sales# again. From B perspective, if we put “Region” into value field, we get a auto “Count”….also display 4 rows, but we get CA:2, Italy:1, Spain:1, and US:2 .
upvoted 2 times
kirin5190
4 years, 6 months ago
so many such "english questions" on these practice so far lol
upvoted 1 times
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Vi1125
4 years, 8 months ago
Interesting but having looked into how 'SUMMARISATION' function works I'd go B - because you want to specify the column you want to summarise for to give the output - as mentioned pbia the summarisation of sale column by itself gives a total - for each row, the default is by Region - as per above format. SUMMARIZE(ResellerSales_USD , DateTime[CalendarYear] , ProductCategory[ProductCategoryName] , "Sales Amount (USD)", SUM(ResellerSales_USD[SalesAmount_USD]) , "Discount Amount (USD)", SUM(ResellerSales_USD[DiscountAmount]) )
upvoted 1 times
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eug45
4 years, 10 months ago
The answer is C. This is an English question, sum sales up to get the answer
upvoted 2 times
eug45
4 years, 9 months ago
Sorry, Answer is B. Is like, someone told you to add the regions together to get the total of sales per region.
upvoted 1 times
eug45
4 years, 9 months ago
Sorry, the answer is C 100% tested it
upvoted 1 times
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shahatul
4 years, 10 months ago
The summarization is happening on region ( same region) which is resulting on adding the sales amount and not other way round. Hence summarization on region is correct answer.
upvoted 2 times
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Fenloh
4 years, 11 months ago
you cannot total a non numeric field, so summarizing the Country is not possible, you summarize the Sales, therefore C is the correct answer.
upvoted 1 times
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pbia
4 years, 11 months ago
if default summarization of sales then value should be sum of all sales not by region, so it should be summarization by region
upvoted 2 times
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Echicken69
5 years ago
So this question is super confusing... I tested this and when I got in to the Values Pane to have a look at what's going on, keeping in mind that the question states "What causes the visualization to display four rows of data instead of six?" - assuming the visualization is a table visual... When I click on the drop down option for "Region" value the DON'T SUMMARIZE option is already ticked (with the green arrow) so when I go to click it again, nothing happens, the table remains the same as the one shown in the question... I clicked on all the other options and it looks nothing like the example. However, when I go to the "Sales" value drop down, the green arrow is actually on the SUM option and when I click the 'DON'T SUMMARIZE' option, all 6 rows appear in my visual... The answer makes no sense... I'm sorry but from tested I think the Answer is C because I've tried all the other options, even backwards with Region and it still doesn't show the same as the example.
upvoted 2 times
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amature
5 years, 1 month ago
Answer is C - the Default Summarization on Sales. By default the column aggregation for Sales will be SUM.
upvoted 2 times
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SamuelZhang
5 years, 1 month ago
Is it an English Test? It should be summarised by Country on sales!
upvoted 1 times
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sumitmalik
5 years, 1 month ago
Correct answer is C , I tried
upvoted 2 times
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Outsider
5 years, 1 month ago
Correct answer is C.
upvoted 2 times
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