To find the value of y when x = 3 in the least squares regression equation y = 1202 + 1133x, we can simply substitute 3 for x in the equation.
Here’s how it works:
1. Start with the equation: y = 1202 + 1133x
2. Plug in the value of x:
y = 1202 + 1133(3)
3. Now, calculate the multiplication:
1133 * 3 = 3399
4. Add that result to 1202:
y = 1202 + 3399 = 4601
Thus, when x = 3, the value of y equals 4601.