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:
Musical Notation is important because it indicates the sound level that each instrument should be played
Explanation:
I'm sorry for not answer your second question...
Answer:
yes but only about schools
<span>Eruption by Van Halen song meaning, lyric interpretation, video and chart position. ... does miss several sequential notes in the scales he basis the tapping run on. ... turned 15/16 i heard Eruption on the Air Guitar cd</span>
