Answer:
a+b=6.....(1)
a-b=2.......(2)
Adding equiation (1)&(2), we get
2a=8
a=4
putting value of a in equiation (1), we get
4+b=6
b=6-4=2
therefore a=4 and b=2
I’m pretty sure that they are
Answer:
The percentage [regression line is unexplained] = 60.6%
Step-by-step explanation:
Given:
Coefficient of determination = 0.394
Find:
The percentage [regression line is unexplained]
Computation:
Coefficient of determination = 0.394
Coefficient of determination = 39.4%
The percentage [regression line is unexplained] = 100% - Coefficient of determination
The percentage [regression line is unexplained] = 100% - 39.4%
The percentage [regression line is unexplained] = 60.6%