Three of my friends tried the new study app and their grades went up. Should I write that it works?

No — three people is far too small a sample. A pattern that small is easily just chance.

The two questions to drill in: "how many?" and "compared with whom?". Small samples swing wildly.

due 2026-09-21 09:54Z · stability 0.00 · difficulty 0.00 · 0 reps · 0 lapses

0 reviews

Never reviewed. It is waiting in the new-card stack.

Evidence is the tutor's one-line justification, written with the grade (review_logs.evidence). “Needed a hint three sessions in a row” is the signal that the card's notes or answer need work — the loop the authoring chat is for (EXAMPLE-LESSONS, “Authoring feedback”).