The beginning is 4 go down 5 and over one
1. 6=a/4+2
6-2=a/4
4=a/4
4(4)=a
a=16
2. -6+x/4=-5
x/4=-5+6
x/4=1
x=4
3. 9x-7=-7
9x=-7+7
9x=0
x=0
4. 0=4+n/5
-4=n/5
-4(5)=n
n=-20
5. -4=r/20-5
-4+5=r/20
1=r/20
r=20
6. -1=(5+x)/6
-1(6)=5+x
-6=5+x
x=-11
8. 2(n+5)=-2
n+5=-1
n=-6
9. -9x+1=-80
-9x=-81
x=9
10. -6=n/2-10
4=n/2
8=n
Answer:
The coefficient of correlation=0.5
Step-by-step explanation:
We are given that
Covariance between the variable x and y=18
Variance of x=16
Variance of y=81
We have to find the coefficient of correlation
We know that
Coefficient of correlation
![r=\frac{covariance(x,y)}{\sqrt{variance(x)}\times \sqrt{variance(y)}}](https://tex.z-dn.net/?f=r%3D%5Cfrac%7Bcovariance%28x%2Cy%29%7D%7B%5Csqrt%7Bvariance%28x%29%7D%5Ctimes%20%5Csqrt%7Bvariance%28y%29%7D%7D)
Using the formula
![r=\frac{18}{\sqrt{16}\times \sqrt{81}}](https://tex.z-dn.net/?f=r%3D%5Cfrac%7B18%7D%7B%5Csqrt%7B16%7D%5Ctimes%20%5Csqrt%7B81%7D%7D)
![r=\frac{18}{4\times 9}](https://tex.z-dn.net/?f=r%3D%5Cfrac%7B18%7D%7B4%5Ctimes%209%7D)
![r=0.5](https://tex.z-dn.net/?f=r%3D0.5)
Hence, the coefficient of correlation=0.5
Answer: 0.6
Step-by-step explanation:
Answer:
5518
Step-by-step explanation: