Sample is a small set of number (n) represent whole population (N). Mean is the average of sample population (∑n/N). For Standard deviation subtract each number from mean and square it. Then find out the mean of squared differences and take square root of it.
<u>Explanation:</u>
Sample is the randomly chosen small set of number represented by n and it represents whole population (N). Sample mean is the average (n) observation from mean. Standard deviation is used to measure the deviation of data from the mean of the sample.
Sampling distribution provides a mean of statistical inference. Sample size should be large enough to represent the whole. It will be more statistically significant if it is large in size. Standard deviation is the dispersion or deviation of data set relative to its mean.
Answer:
The correct answer is c) a chemical change, because a gas was produced.
Explanation:
Sometimes when performing scientific experiments in laboratories, chemical changes are obtained in the elements that have been used, a chemical change is an alteration in the structure of a compound, so the element is different than at the beginning of the experiment.
Generally, when there is a chemical change this is usually irreversible; For example, in the case of Nio, he experiments with yeast, water, and sugar, which puts it in a bottle and closes it with a balloon, this mixture of substances has resulted in a chemical change since the element is transformed in gas.
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Whats the question? i need the question to answer the question so plz comment the question so i can answer.
Answer:
correct option is B. the purity of a sample of gold
Explanation:
given data
expression = 24 karat
solution
As Karat is used with gold
and it is an measure of the unit of purity of gold
with 24 karat gold is an pure gold
pure gold is very soft so we mix silver or copper and that its each karat indicate that 
th of whole unit
so we can say correct option is B. the purity of a sample of gold
During the age of exploration, the spanish conquistadors arose to the america in exploration of the three G's: gold, glory, and God. The spanish crown acknowledged the gold and glory and the catholic church acknowledged the converts.
