Answer:
distributed practice.
Explanation:
Many students review course material at various times during a semester so they will be prepared for the final exam. These students are especially likely to retain the information far into the future. This best illustrates the value of distributed practice. Distributed practice is a strategy of learning that makes use of smaller addiction of study and practice over a longer period of time rather than a short period of time. For example, studying something during two different sessions with a break of a few days (or even hours) in between, rather than learning it all in a go.
Answer:
capitalist class
Explanation:
In simple words, as per the sociologist Dennis Gilbert The 'capitalist class' is considered to be the population of individuals who own the factors of production and hire workers.
'In the industrial world they have an upper hand as they prefer to extract the jobs from the workers to the labourers to retain the income. The employees are sacrificing their desire to earn their daily pay and hard work.
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.
