In: Statistics and Probability
The annual profits for a company are given in the following table. Write the linear regression equation that represents this set of data, rounding all coefficients to the nearest ten-thousandth. Using this equation, estimate the year in which the profits would reach 413 thousand dollars.
Year (x) Profits (y)
(in thousands of dollars)
1999 112
2000 160
2001 160
2002 173
2003 226
Can you please show step by step solution thanks.
Solution :
X | Y | X*Y | X*X |
1999 | 112 | 223888 | 3996001 |
2000 | 160 | 320000 | 4000000 |
2001 | 160 | 320160 | 4004001 |
2002 | 173 | 346346 | 4008004 |
2003 | 226 | 452678 | 4012009 |