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. Handball
Explanation:
Because It was in there culture for many years.
I believe the answer is: learn and adapt
counterinsurgent force refers to the efforts that is made by people to defeat and eliminate a certain threat to society,. The efforts that the force made were not always successful, In such situation, they will learn the things that cause the failure and adapting to it by making a couple of adjustments toe ensure that the mistake is not repeating in the future.
Answer:
B. . Prices of goods were subject to fluctuate widely
Explanation:
Due to the reliance, countries in Latin America require the supply of raw materials from another country in order to fulfill a large portion of their economic production.
This means that if the price of the materials changes in another country, it will most likely force the producers in Latin American country to adjust their production expense in order to accommodate the new price.
As a result, The Prices of finished goods in Latin America often fluctuates.
