Answer:
The Correlation analysis “R” is measured to compute the strength of relationship among variables. Moreover, the value of correlation is calculated among -1 to +1. Which implies that if the computed value is near to -1 then there will be strong but negative relation and if near to +1 then it is strong but relation among the variable. However zero is consider as neutral point.
A. The computed value of correlation is - 0.772. The value identifies that that there is a strong but negative association among the variables (GDP and infant mortality rate).
B. The correlation analysis cannot computed among the variables continent and GDP because "continent" is a categorical variable not quantitative.
C. The computed value of correlation is higher than 1. Thus, the statement implies that there is a very strong relationship among life expectancy and GDP which is incorrect. As the association cannot be higher than 1.
D. There is a strong relationship among literacy rate and GDP as the relationship is nearer to 1. Furthermore, the association among literacy rate and GDP doesn’t suggest the causation.
E. The computed correlation among the variables is 0.90. Which indicated that the variables goes up. That is, when the GDP goes down the import is also decrease and when GDP increases the import increases Thus, the there is a positive correlation.
Answer:
decreased by 20%
Explanation:
Supposed we have input price of $30,000 and it produced an output of 300 units on the first year of operation. The cost per unit on the first year is $100 each ($30,000/300).
On the second year we still have the same input expense of $30,000 but the productivity output increased by 25%. So we have 375 units produced on the second year’s operation. The new cost per unit would be $30,000/375=$80 per unit.
Therefore we conclude that based on the example given, the new unit cost per product decreases by 20%.
$100-80 = $20
$20/$100 = 20%
Answer peoples questions and do the challenges
Answer:
The first step is to show where the supply curve will shift, and in this case, the supply curve will shift to the right.
This is because OPEC has decided to increase oil production, or in other words, it has decided to shift the oil supply to the right. After this, the equilibrium price will probably fall, unless demand also rises proportionally.
