Verbs of outcome (osoittautua)

The Outcome: osoittautua

To express that something turns out to be a certain way, use the verb osoittautua. It governs the translative case, meaning the word describing the outcome takes the -ksi ending.

The hypothesis turned out to be valid.
Hypoteesi osoittautui paikkansapitäväksi.
The experimental data turned out to be misleading.
Kokeellinen aineisto osoittautui harhaanjohtavaksi.

If the outcome is described by an adjective and a noun, both words take the -ksi ending:

The anomaly turned out to be an erroneous measurement result.
Poikkeama osoittautui virheelliseksi mittaustulokseksi.

Comparing Two Things: toinen ... toinen

When contrasting two things, Finnish uses toinen twice to mean "one ... the other".

One conclusion is experimental, the other is an anomaly.
Toinen päätelmä on kokeellinen, toinen on poikkeama.
One hypothesis is accurate, the other turned out to be misleading.
Toinen hypoteesi on paikkansapitävä, toinen osoittautui harhaanjohtavaksi.

Maximizing Actions: mahdollisimman

To say something is done "as [adverb] as possible", use mahdollisimman directly before the adverb.

We analyzed the new hypothesis as quickly as possible.
Analysoimme uuden hypoteesin mahdollisimman nopeasti.

Expressing Probability: lienee

To state that something "has probably" happened, use lienee (the potential mood of olla) alongside the past participle of the main verb (ending in -nut / -nyt or -neet).

He has probably analyzed the material as carefully as possible.
Hän lienee analysoinut aineiston mahdollisimman tarkasti.

You can combine this with osoittautua to describe probable outcomes:

The measurement result has probably turned out to be erroneous, because we analyzed it too quickly.
Mittaustulos lienee osoittautunut virheelliseksi, koska analysoimme sen liian nopeasti.