In a trend line equation $y=a+b(x-\bar{x})$, 'a' is equal to: |
mean of x mean of y slope of the trend line zero |
mean of y |
The correct answer is Option (2) → mean of y $y = a + b(x - \bar{x})$ $\text{At } x = \bar{x},\ y = a$ $\text{Thus, } a = \bar{y}$ $a = \bar{y}$ |