Mathematics · Design of Experiments
If the incidence matrix N of a block design is given by a 4 × 4 matrix where all diagonal entries are 0 and all off-diagonal entries are 1 (or vice versa, forming a symmetric structure), which of the following properties is true for a design with the given matrix N = [[1, 1, 1, 0], [1, 1, 0, 1], [1, 0, 1, 1], [0, 1, 1, 1]]?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1The design is incomplete.
- 2The design is connected.✓
- 3The design is orthogonal.
- 4The design is disconnected.
Correct answer
The design is connected.
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