In the perfect correlation principle, what is the Y-intercept?

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Multiple Choice

In the perfect correlation principle, what is the Y-intercept?

Explanation:
When two variables are perfectly correlated, all data points fall exactly on one straight line, so you can describe the relationship as Y = a + bX. The intercept a is the value of Y when X is zero. In the perfect-correlation framework, especially when we look at standardized or centered data, the line passes through the origin, meaning the predicted Y is zero when X is zero. That makes the Y-intercept zero. So the Y-intercept is zero.

When two variables are perfectly correlated, all data points fall exactly on one straight line, so you can describe the relationship as Y = a + bX. The intercept a is the value of Y when X is zero. In the perfect-correlation framework, especially when we look at standardized or centered data, the line passes through the origin, meaning the predicted Y is zero when X is zero. That makes the Y-intercept zero. So the Y-intercept is zero.

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