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:The 2017 Iraqi–Kurdish conflict occurred in and around the Kurdish region of northern Iraq that began on 15 October 2017, shortly after the Iraqi Kurdistan referendum in 2017 was held on September 25. After the independence referendum, Prime Minister Haider al-Abadi demanded the referendum to be canceled.
Explanation:
Answer:
Hence the information at disposal was incomplete.
Explanation:
The absence of a flight data recorder led the investigators to call off the investigation. It is often concluded that the investigation was called off because:- the information at disposal was incomplete. The flight data recorder is a crucial instrument that receives information from the sensors located in several parts of the plane and provides essential information associated with aircraft accidents.
Answer:
Yes.
Insurance, by its very nature, socializes risks and losses while privatizing profits.
Explanation:
This has been the nature of insurance, health insurance inclusive. All insurance is about spreading (socializing) the risks so thinly that each affected person does not feel any heavy burden. A health insurance policy collects some amount of premium in order to cover unforeseen health risks for the insured. There is no policyholder who pays for the full cost of her policy. The cost is always spread out to the insuring public.
