The correct answer is <span>18 to 25. This is sometimes referred to as the young adult period because it's where people start becoming people and their puberty ends and they mature both psychologically and physically. You stop growing and your personality slowly starts establishing. This is an especially difficult period for teens and ends in this age.</span>
The pair of leaders that used political purges including the killing of opposition groups as a means of maintaining control of the government were Joseph Stalin and Mao Zedong. Stalin was the communist leader in Russia and Mao Zedong was another communist leader from the country of china. I hope it helps you.
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.
A line graph would be a great choice for such data.
<h3>What is a line graph?</h3>
A line graph illustrates the relationship or variation between two variables that are displayed on the x- and y-axes. It is mainly used for tracking changes over short and long periods.
<h3>Why line graphs are useful in such cases?</h3>
Since line charts typically employ a series of data points connected by straight lines on two axes to depict changes over time. In light of the fact that one set of data is always dependent on the other, line charts are useful for analyzing the relationship between two sets of values.
Learn more about line charts here:
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c) Hostility is a characteristic of people with type A behavior patterns.
In the field of social science, such a person that has an aggressive nature is hostile, and competitive is said to be having a type A behavior pattern.
People with type A behavior patterns try to be dominating and turn aggressive if something is not done according to their demands. Such people are hostile towards others and tend to get angry early.
A hostile nature is characterized in a Type A behavior pattern. Such people are also highly competitive and fell the need to win at any cost.
Although a part of your question is missing, you might be referring to this question:
which of the following is characteristic of those with a type a behavior pattern?
a) extroversion
b) coldness
c) hostility
d) agreeableness
To learn more about hostility, click here:
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