Answer:
a positive correlation
Explanation:
The positive correlation defines the relationship between two different variables is steady that is they move in the same direction. A positive correlation closer to 1, is stronger. In other words, if one variable increases then the other variable increases too and vice-versa.
Example: The more a person exercises, the more calories he or she will burn.
It depends on the subject matter of the presentation. If persuasion is your goal, then use emotional appeals, but if you're simply trying to present for the purpose of informing, then analytical is the way you should go. <span />
Answer: D. It can be conducted with existing data
Explanation:
Cohort studies observe a number of people over a period of time to discover the factors pertaining to a disease such as its causes and effects. It can be prospective, which uses data gathered in the future or retrospective which uses data already collected.
Prospective cohort studies are useful in estimating risk and impractical for studying rare diseases due to the need for a large group. When used to identify the cause of a disease, a hypothesis is tested by monitoring a cohort for any differences in health associated with the risk factor
.
Existing data. and the study of diseases with a long latency between exposure and symptoms development apply to retrospective cohort study.
Answer:
MD population in 2020 is estimated to be 6 million.
Explanation:
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