Alex puts his spare change in a jar every night. if he has $11.09 at the end of january $22.27 at the end of febuary $44.35 in april $75.82 in july $ 89 in august and $114.76 at the end of october perfrom a linear regression on this data to complete the following items? alex wants to buy a video game at the end of december for $140 will he have enough for this purchase? can you show me the calculations also please!
We following points
Let regression line be
`y=ax+b` ,where a and b are constants to be determined.
Thus to determine a and b ,we have two equations as follows
solving above system of equation
So regression line is
Alex wants to buy a video game at the end of December i.e x=12
But video game available for $140.But Alex has only $139.35.So he has not enough money to buy video game.