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:
FALSE
Explanation:
The intent of sexual harassment law is NOT to make the workplace totally devoid of sexuality. Its intention is to protect workers (both male and female) from a hostile sexual conduct that will likely lead to embarrassment, stress, shame, anger, and other negative feelings incompatible with a healthy work environment. Sexual harassment is perceived as a form of discrimination.
Answer:
b. representative democracy- pay taxes - choose leaders
Explanation:
according to g00gle many aspects of roman law and the roman constitution are still used today. these include concepts like checks and balances, vetoes, separation of powers, term limits, and regular elections. 'b' is the answer choice that aligns with g00gle's explanation. and also answer choice 'b' lines up with what the united states government is like today, because we elect our representatives our parents pay taxes and representative means we choose our leaders.
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Answer:
A) Cyrus oversaw a period of great peace and prosperity throughout his empire
B) The Persians looked down on the culture and knowledge of the people they conquered
Explanation:
- The Persian empire refers to a series of the imperial dynasties for the 6the Century BC and is stated to be as the most powerful empire In the world and it stretched from the Egypt to India and had rich resources of the water and fertile and gold.
- The first Persian empire was formed in the Cyrus around the 550 BC and thereby became the largest empires in the history and stretched form the Balkan to the Indus valley.
