Answer:
a letter written by a person who is describing a current event
Explanation:
A primary source is a document from the time period of the event.
While most of these could be considered one, you have to do a process of elimination.
A scholarly article about an old event isn't a primary source, so it's not that.
An interview with a reporter who wrote about a current event is not a primary source because it is not the original document from the reporter.
A student's report about an event that occurred during her lifetime is a primary source, but it is not the best example.
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:
If the reaction causes the same answer every time
Artists, architects, and writers used realistic techniques. Their work reflected the Renaissance ideals of humanism, an appreciation of the classics, and curiosity.
Answer:
TRUE
Explanation:
the answer is TRUE
College coursework will not give anyone the skill of workplace.
If you want to develop your Skill you should work at the workplace to learn the skill.
there are a lot of knowledge which is not present in the coursebook.to learn those one have to indulge with it.
