Answer:
3%
Explanation:
3% of the earth's water is fresh. 2.5% of the earth's fresh water is unavailable: locked up in glaciers, polar ice caps, atmosphere, and soil; highly polluted; or lies too far under the earth's surface to be extracted at an affordable cost. 0.5% of the earth's water is available fresh water.
Consider the population of kids ages 6-10 who attend public schools. The sample can be obtained at their public school with the help of teachers.
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What is a representative sample?</h3>
A representative sample is a subset of people that aims to accurately reflect the nature of the larger group. For example, a classroom of 30 trainees with 15 males and 15 females could yield a representative sample that might contain six students: three males and three females. There are two methods available that researchers can use to create representative models. They are named probability sampling and non-probability sampling.
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