Um let me think about it umm
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.
Booker T. Washington and W.E.B. DuBois were two important leaders of the Black community in the United States. However, they each had very different opinions about the role of the African community, and on how equality could be achieved.
Booker T. Washington believed that the Black community needed to adopt a philosophy of self-help, racial solidarity and accomodation. He believed that African Americans had the duty to educate themselves and improve their livelihood in order to be taken seriously by white Americans. On the other hand, W.E.B. DuBois believed that this approach only put an extra burden on black people, while ignoring the responsibilities of whites. He argued that social change had to come through political change, and advocated political action.
I believe that their differences were as substantial as the friction between their followers. The two men had very different opinions about race and advancement. Moreover, I believe that the opinions of Booker T. Washington were more suited to the temper of the times as he took a more positive view of white people and a more negative view of conflict and political activism.
