Draw the Decision Boundary Quiz

154 questions PHP Plotly.js Saved progress

Build your quiz

Choose a mode, filter the question bank, and set your challenge length.

Mode

Questions

Difficulty

Topic

Algorithm

Boundary shape

Question type

Pass score

Shuffle selected questions

Included learning options

Visual interpretation

Identify regions, margins, contours, support vectors, errors, and model complexity.

Interactive drawing

Adjust slope and intercept, then earn credit from classification accuracy.

Performance analysis

Review topic mastery, difficulty scores, speed, trends, and recommendations.

Decision boundary sandbox

Explore model shapes, thresholds, complexity, scaling, noise, and class regions.

Dataset Model style Slope 0.80 Intercept 0.00 Complexity 3 Threshold 0.50

Probability contours

Highlight errors

Show margins

Show test points

How to use the quiz

Choose a mode and optional filters.
Answer multiple-choice, true-or-false, select-all, or drawing questions.
Use hints carefully because hinted answers lose ten percent credit.
Review explanations, bookmarks, weak topics, and the final Plotly report.
Export results as CSV, copy the summary, or print to PDF.

Drawing formula

Boundary: y = mx + b
Prediction: class 1 when y ≥ mx + b
Drawing score: correctly classified points ÷ total plotted points

Keyboard shortcuts

1 to 4 choose answers. H shows a hint. N moves next.

Accessibility

Every graph includes labels, class symbols, and text feedback. Controls support keyboards, focus indicators, zooming, and responsive layouts.

Quiz report

Recommendations

Question details

#	Topic	Type	Result	Credit	Time