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ISTQB Exam ISTQB-Agile-Public Topic 1 Question 8 Discussion

Actual exam question for ISTQB's ISTQB-Agile-Public exam
Question #: 8
Topic #: 1
[All ISTQB-Agile-Public Questions]

User Story: As a user I want to be able to calculate tax percentage based on amount of income.

What is the best black box test design technique for verifying the accuracy of this user story?

SELECT ONE OPTION

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Suggested Answer: B

Equivalence partitioning is a black box test design technique suitable for verifying the accuracy of user stories like the one described. It involves dividing input data of a software unit into partitions of equivalent data from which test cases can be derived. For a user story involving tax percentage calculation based on income, Equivalence Partitioning allows the creation of test cases for different income ranges (low, medium, high) to ensure that the system accurately calculates tax percentages for each partition, thus covering various scenarios within the application's functionality.


by Albina at Apr 11, 2024, 09:30 PM

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Terrilyn
9 months ago
By testing all statements in the income calculation, we can ensure complete coverage of the functionality.
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Gussie
9 months ago
Why do you think so, Terrilyn?
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Terrilyn
9 months ago
I disagree, I think Statement Testing would be more thorough.
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Crista
9 months ago
Because testing with low, medium, and high income amounts covers a wide range of possible scenarios.
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Gussie
10 months ago
Why do you think so, Crista?
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Crista
10 months ago
I think Equivalence Partitioning would be the best technique.
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Denae
11 months ago
That's a good point, we should consider that as well.
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Margot
11 months ago
But wouldn't User story testing also be important to make sure the user can actually get the result they expect?
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Jeff
11 months ago
I agree with we need to test with different income levels to ensure accuracy.
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Denae
11 months ago
I think Equivalence partitioning would be the best choice for testing this user story.
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Deane
10 months ago
That makes sense. It covers a wide range of scenarios.
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Rima
11 months ago
B) Equivalence partitioning - test with low, medium and high income.
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Lashon
12 months ago
Woah, state transition testing? That sounds a bit overkill for a simple tax calculation feature. I'd stick with the more straightforward approaches like equivalence partitioning or user story testing.
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Johna
12 months ago
Hmm, statement testing could work, but I'm not sure it's the *best* approach here. I think state transition testing might be more comprehensive, testing all the possible states of the income entry process.
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Patria
12 months ago
I don't know, you guys. I'm leaning more towards statement testing. We should make sure all the individual statements in the income calculation are working correctly. That feels like a solid approach to me.
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Princess
12 months ago
I kind of agree with Hayley. User story testing seems more aligned with the actual requirement. Plus, it's more user-centric, which is important for a feature like this.
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Hayley
12 months ago
I'm not so sure about that. I think user story testing might be a better fit here. We need to verify that the user can actually perform the key task of entering an income amount and getting the result.
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Asha
12 months ago
Hmm, this question is interesting. I think the best approach here would be equivalence partitioning. Testing with low, medium, and high income levels should cover the key scenarios and ensure the accuracy of the tax calculation.
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