Item analysis

Question statistics

Attempts · 6Questions with data · 5

Question	n	Difficulty p	Discrimination r_pb	Verdict
What is the essential property that defines a convolutional layer?	6	0.83	0.18	OK
What is the primary motivation for including pooling layers in a CNN, according to the lecture?	6	0.67	0.43	OK
Why can't the human brain perform gradient descent for learning, according to the lecture?	6	0.83	0.18	OK
Why do modern CNN architectures often prefer strided convolutions over separate pooling layers?	6	0.33	0.71	OK
Why is max pooling generally preferred over average pooling in convolutional networks for vision?	6	0.67	0.43	OK

Rejection rule (from 5 attempts): a question is flagged when its difficulty p falls outside 0.30–0.85 (share answering correctly) or its point-biserial discrimination drops below 0.15 (correlation with the rest of the attempt score). Retiring and regenerating flagged questions runs offline: uv run python -m app.quality … --regenerate.