Inventory
List the active outcomes, frequencies, group counts, or source values before choosing an operation.
QUANTITATIVE REASONING · PROBABILITY + STATISTICS · MIXED PRACTICE
Change the event.
Keep the denominator.
Interleave conditional outcomes, dependent draws, weighted means, and center-spread comparisons with guaranteed topic or objective coverage.
1official topic
2study objectives
1guided lesson
4practice questions
5choices per question
Why this mix works
Coverage first. Randomness second.
Cover
The objective sweep includes one probability model and one statistical summary before shuffling.
Audit
Confirm conditions, replacement rules, group weights, and the exact center or spread requested.
Repeat
A new set changes question and answer order while the exact result stays attached to its complete-data evidence.
Balanced mixed retrieval
Choose quick or both objectives.
Both modes give immediate, option-specific explanations and private issue reporting. Results remain on this device and do not estimate an official DAT score.
4 PRACTICE QUESTIONS · 2 STUDY MODES
Choose the denominator. Preserve the data.
Each mode selects its promised topic or objective coverage first, then shuffles question order and all five answer choices. Every key is recomputed from an exact probability or statistics certificate.
Sources and limits
Official scope, original practice.
The topic label comes from the ADA DAT User’s Manual ↗. The ADA does not publish a separate quota for this Mathematical Problems line, so DAT TRAIN does not invent one.
All four questions and explanations are original. They remain draft and uncalibrated; use raw accuracy to choose what to review, not to predict an official score.