Answer:
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Answer: descriptive statistics
Explanation:
The owner of a factory regularly requests a graphical summary of all employees' salaries. The graphical summary of salaries is an example of the descriptive statistics.
Descriptive statistics refers to the branch of statistics that describes features of a data that are involved in a study. The main idea behind the descriptive statistics is simply to provide a summary of the samples that are done on a certain study.
Explanation:
Focusing on the environment of development is a means of concentrating on the cycle of quality checks which enters the deliverable into development A method of high quality production will lead to the safety of the deliverables.
In the context of delivery the deliverable is generally utilized. Clearly it is essential for a deliverable to perform well in the environment it works in.
Answer: Juan; Lower
Explanation:
One can do the work in which it has a comparative advantage. If one person has the lower opportunity cost of doing some work than the other person then he would specialize in that activity.
Here,
Juan opportunity cost of washing a car = 
= 0.5 car waxed
This means that the opportunity cost of washing a car is being able to wax 0.5 car.
Maria opportunity cost of washing a car = 
= 2 cars waxed
This means that the opportunity cost of washing a car is being able to wax 2 cars.
Therefore, the opportunity cost of washing a car is lower for Juan. So, Juan would specialize in washing.