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:
Appalachia (/ˌæpəˈleɪtʃə, -leɪʃə, -lætʃə/) is a cultural region in the Eastern United States that stretches from the Southern Tier of New York State to northern Alabama and Georgia.[1] While the Appalachian Mountains stretch from Belle Isle in Canada to Cheaha Mountain in Alabama, the cultural region of Appalachia typically refers only to the central and southern portions of the range, from the Blue Ridge Mountains of Virginia, southwesterly to the Great Smoky Mountains. As of the 2010 United States Census, the region was home to approximately 25 million people.[2]
The Voting Rights Advancement Act was introduced in the House of Representatives by Rep. Terri Sewell (D-AL) on June 21, 2017, and in the Senate by Sen. Patrick Leahy (D-VT) on June 22, 2017.
Answer:
Explanation:
After the Supreme Court has heard a case and issued a majority opinion. as soon as someone has been arrested and accused of breaking federal law.
Answer:
I found it funny that Joseph Stalin is here, but <em><u>It's going to be Winston Churchill</u></em> because he was the only one alive while George Washington was alive.
Explanation:
Winston was from Britain and all that colonial war shenanigans.
<em>literally everyone else from answers A to C didn't even exist in this time period, this is a hilariously easy question to answer.</em>
