QUESTION 1 / 20 · CORE CONCEPTSEasy
Predicting a house price from its size and location is a…
PRECISION VS RECALL
Where should the spam filter draw the line?
A model gave 24 emails a spam score. Everything right of the line goes to the spam folder. Move it and watch what you catch, and what you wrongly bin.
threshold 50
actually spamactually a real email
flagged spamleft in inboxspam9
caught2
missedreal4
wrongly binned9
correctly kept
caught2
missedreal4
wrongly binned9
correctly kept
69%Precisionof binned emails that really were spam
82%Recallof all spam that got caught
0.75F1 scorebalance of the two, 0 to 1
What this machine learning test covers, in short
Twenty multiple-choice questions at introductory undergraduate level, four on each of five topics: core concepts, training and optimisation, evaluation, classic algorithms, and deep learning. They test how models learn from data and how to judge whether they work.
No coding required. The test is our own and not normed. For background, read the machine learning study guide.
By What's Your IQ · Reviewed 5 Oct 2026- Format
- 20 multiple-choice questions
- Level
- Introductory undergraduate
- Bonus
- Spam-filter threshold and confusion matrix
- Term coined
- Arthur Samuel, 1959