Answer:
D.) They must be representative of the population.
Explanation:
In general a sample collected from a set of naturally distributed data set must also follow the bell curve or natural distribution
In other way round it can be said that sample set must have the same characteristics as that of the main set and hence a sample must be representative of the population.
Option D is correct
Answer:
The correct answer is
B. Artists portrayed images of death.
Explanation:
The black plague is the most deadly pandemic in history (1347-1353). In Europe, Asia and North Africa the black plague caused death to approx 200 million people.
Answer:
A circle is 2D, while a Sphere is 3D
Explanation:
I'm Pretty Sure It Was Middle Ages And Renaissance.
