Regression analysis is being used to find the line of best fit (y = a + bx) from eleven pairs of data. The calculations have produced the following information: Σx = 440, Σy = 330, Σ(x*x) = 17,986, Σ(y*y) = 10,366 and Σxy = 13,467What is the value of ‘a’ in the equation for the line of best fit (to 2 decimal places)?
A、0.63;
B、0.69;
C、2.33;
D、5.33
发布时间：2025-07-09 11:43:46
