Answer:
The description corresponds to an observational study.
Explanation:
In Observational studies, researchers observe the effect of a risk factor without changing what is exposed to it or its conditions. On the other hand, in an experimental study, researchers can introduce a change and study the effects of it.
Answer:
1 Declining fertility and increasing longevity lead to rising numbers of older persons as well as a continuously growing share of older persons in the population.
Explanation:
Answer:
ordinal scale
Explanation:
Ordinal scale -
Ordinal scale is the second scale of measurement in the four measurement scales .
It refers to the generation of the ranks or orders of the data , irrespective of the variation between them , is referred to as ordinal scale .
Any data can be sorted easily with respect to their ranks .
Hence , from the given scenario of the question ,
The correct answer is ordinal scale .
The process in which a solid change to a liquid is called melting. The melting point is the temperature at which a solid changes to a liquid. For a given type of matter, the melting point is the same as the freezing point.
