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.
Explanation:
If richer regions can attract more investment than poorer regions because of their larger ex ante tax bases, then fiscal federalism adversely affects the growth prospects of poorer regions by reducing the resources available for either central or regional governments to fund valuable projects in poorer regions.Often geographical constraints, market imperfections, government policies, a lack of law & order, identity, per capita income and various socio-economic reasons can contribute to regional disparity such that some regions are more backward than other areas falling within the same nation
(hope it helps)
Answer:
Option A
Explanation:
In democracy, the opponent includes one or even more national or regional parties or other formed organisations that are objected in the political power of a area, province, state, nation or even other political institution, primarily politically, to the administration, faction, or community.Opposition party works as one the major pillars for democracies.
Federal government came into existence after the concept of democracy and democracy can only be achieved when people have the alternative to choose their representative.
Base on the question which is asking to choose among the following country that the Treaty of Guadalupe Hidalgo leads them to victory and in my research, the possible answer would be letter C. United states. I hope you are satisfied with my answer and feel free to ask for more if you have question and further clarifications
