Answer:
A country scores a higher HDI when the lifespan is higher, the education level is higher, and the gross national income GNI (PPP) per capita is higher. ... The index does not take into account several factors, such as the net wealth per capita or the relative quality of goods in a country.
Answer:
(B) Sound travels faster through water than through air
Explanation:
Nonexperimental designs attempt to test differences among variables, and experimental designs attempt to establish cause-and-effect relationships.
Nonexperimental designs include research designs in which an experimenter virtually both describes a collection or examines relationships among preexisting agencies.
Experimental studies examples are unique, relying on the kind of experimental research design this is being considered. The most basic instance of experimental studies is laboratory experiments, which may additionally fluctuate in nature depending on close to research.
The experimental method includes the manipulation of variables to establish motive and effect relationships. the important thing features are managed methods and the random allocation of contributors into controlled and experimental corporations. A test is an investigation in which a hypothesis is scientifically tested.
Learn more about research designs here: brainly.com/question/21422013
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Answer:
The correct answer is D
Explanation:
This kind of research design involves taking a set of data, information or measurements at intervals of time over a period that happened before and after an intervention of interest in two or more nonequivalent groups.
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