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 correct answer for the question that is being presented above is this one: "C. equal rights in education for men and women." The proposal that was NOT part of the declaration of rights and Sentiments at Seneca falls is that <span>C. equal rights in education for men and women</span>
Her father is the mortal Frederick Chase and her mother is Athena, the goddess of wisdom. She first appears in the first novel of the series, The Lightning Thief. Throughout the series she becomes close friends with Percy Jackson, later becoming his main love interest and girlfriend.
Based on Peter's age, the category that development psychologists would place Peter in is Oldest-old.
<h3>What is the Oldest-Old category?</h3>
According to developmental psychologists, there are several categories that people can be placed based on their age.
Peter can be placed in the oldest-old category because he is 92 years old and the category is for people above the age of 85.
Find out more on age categories at brainly.com/question/1228207.
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