Her varyasyon, test sonuçlarına dayanarak değerlendirilir.

Each variation is evaluated based on the test results.

Breakdown of Her varyasyon, test sonuçlarına dayanarak değerlendirilir.

• her: each
• varyasyon: the variation
• test sonuçlarına dayanarak: based on the test results
• değerlendirilmek: to be evaluated

Questions & Answers about Her varyasyon, test sonuçlarına dayanarak değerlendirilir.

Why is varyasyon singular instead of varyasyonlar after her?

In Turkish, her (“every”) always takes a singular noun. You cannot say her varyasyonlar; you must use the singular form her varyasyon.

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What is the function of test sonuçlarına in this sentence?

test sonuçlarına is an adverbial phrase in the dative case. It literally means “to/onto the test results” but here it’s used with the participle dayanarak (“relying on/based on”) to mean “based on test results.”

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Why does test sonuçlarına carry three suffixes (-lar, -ı, -na) instead of just one?

Let’s break it down:
1) sonuç = “result”
2) -lar (plural) → sonuçlar = “results”
3) -ı (3rd-person possessive) → sonuçları = “its/the results” (marking them as definite)
4) -na (dative) → sonuçlarına = “to the results”

The possessive -ı is needed because dayanmak (“to rely on”) normally takes a definite noun in the dative.

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What is the little n in -ına for?

That n is a buffer consonant used when attaching a vowel-initial suffix (–a/–e or –ı/–i) onto a stem that already ends in a vowel. Here, the possessive -ı ends in a vowel, so we insert an n before adding the dative -a → -ına.

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What does dayanarak mean, and why this form?

dayanarak is the adverbial participle (–arak/–erek) of dayanmak (“to rely on, to base on”). It literally means “relying on,” so placing test sonuçlarına dayanarak before a verb means “based on test results…”

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Could I say dayalı olarak instead of dayanarak?

Yes. -dayalı is an adjective-forming suffix meaning “based on.” You can say:
Test sonuçlarına dayalı olarak her varyasyon değerlendirilir.
Both mean “Every variation is evaluated based on test results,” though dayanarak is more directly verb-based and common in technical writing.

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Why is değerlendirilir in the passive voice?

değerlendirilir is the passive present-simple (“is evaluated”). In formal and technical Turkish, passive is often used to focus on the process rather than who performs it. If you wanted an active form, you’d need an explicit subject (e.g. “Biz her varyasyonu… değerlendiriliriz” – but that’s unidiomatic).

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Can I reorder the sentence? For example, start with Test sonuçlarına dayanarak?

Absolutely. Turkish word order is flexible:
Test sonuçlarına dayanarak her varyasyon değerlendirilir.
versus
Her varyasyon, test sonuçlarına dayanarak değerlendirilir.
Both are correct; you choose based on which element you want to emphasize.