Teaching NVS TGT 2024 Test Series Mathematics Statistics

If the pairwise correlation coefficients between three random variables X_1, X₂ and X₃ are r₁₂ = cos²θ, r₁₃ = sin θ, r₂₃ = cos θ, then the partial correlation coefficient r₁₂₃ is equal to:

1

cos θ - 1

2

sin θ - 1

3

tan θ - 1

4

cot θ - 1

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