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.
THE Jury if I an not mistaken
Answer:
D) All of these responses are correct.
Explanation:
The concept of traditional family has been gradually lessening because nowadays you see more children who are born to single mothers and singlehood and divorces rates are up. Thus, the family concept has changed a lot because in the past, families were closer and they were married for many years and had a lot of children to take care of; however, in these days, you see that people do not care about following a family tradition, getting married or finding necessary to have or raise children with their couple. That is why generations change through time.
You'd find the information in the Congressional records.
Answer:
This lack of emotional expression is a symptom of schizophrenia called flat affect.
Explanation:
Flat affect, also known as blunted affect, implicates an extreme decrease in the expression of emotions. This phenomenon is commonly seen in people with depression and schizophrenia. A person with schizophrenia can show abnormal signs of emotion, speak in a toneless voice, lack significant facial expressions, and seem to show severe apathy.
