Answer:
1. Co-variance= -1.2
2. correlation coefficient= -0.4404
3. There is weak negative relationship between x and y.
Explanation:
1.
Co-variance= Cov(x,y)= sum[(x-xbar)(y-ybar)]/n
xbar=sumx/n=32/5=6.4
ybar=sumy/n=35/5=7
x 7 8 5 3 9
x-xbar 0.6 1.6 -1.4 -3.4 2.6
y 7 5 9 7 7
y-ybar 0 -2 2 0 0
(x-xbar)(y-ybar) 0 -3.2 -2.8 0 0
Cov(x,y)= sum[(x-xbar)(y-ybar)]/n=-6/5=-1.2
Cov(x,y)=-1.2
2.
correlation coefficient=r
x 7 8 5 3 9
x-xbar 0.6 1.6 -1.4 -3.4 2.6
y 7 5 9 7 7
y-ybar 0 -2 2 0 0
(x-xbar)(y-ybar) 0 -3.2 -2.8 0 0
(x-xbar)² 0.36 2.56 1.96 11.56 6.76
(y-ybar)² 0 4 4 0 0
r=-0.4404
3. Since the value of correlation coefficient is negative and less than 0.5 , so, we can say that there is weak negative relationship between x and y.
Answer:
A developing country is likely to have a higher population growth rate due to a higher birth rate from a high infant mortality rate - more babies born to ensure survival of male heir. A developed country is likely to have a lower population growth rate due to a lower birth rate from a low infant mortality rate.
Answer:
Gandhiji used to say that religion can never be separated from politics.
According to the study material, religion should be kept separate from the State because: It enables the country to function democratically. The people belonging to the minority communities can otherwise be harmed by the domination of the majority and there can be an infringement of the Fundamental Rights.
Explanation:
hope this is what you were asking if not let me know
It could be understood that Attention deficit hyperactivity disorder (ADHD) is not inherited. It might also be good to add that the cause of this disorder is unknown but it might be identify a number of possible differences in the brain, there might be other factors such as <span>being born prematurely, having a low birth weight or <span>smoking, alcohol or drug abuse during pregnancy.</span></span>
