Mathematics · Statistics
Let x + 2y + 1 = 0 and 2x + 3y + 4 = 0 be two lines of regression computed from some bivariate data. If θ is the acute angle between them, then what is the value of 488 tan(3θ)?
- 1121
- 2131
- 3161
- 4191✓
Correct answer
191
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