#quantitative-methods-basic-concepts #statistics
We use statistical methods to analyze the results of data. Since the amount of information available may be vast, it may be extremely time-consuming and expensive to collect all the necessary data. For instance, suppose we are interested in the durability of tennis balls. Theoretically, in order to carry out an accurate assessment, we would need to collect large quantities of all different makes of tennis balls from all over the world. Clearly, this is not practical; aside from taking up lots of time, it would be cost-prohibitive to purchase all the balls we would need for our study. A more practical solution would be to use a sample.
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Subject 1. The Nature of Statistics ta into useful information. Drawing conclusions (making estimates, judgments, predictions, etc.). Inferential statistical methods can be used to draw conclusions about a large group from a smaller group actually observed.
<span>We use statistical methods to analyze the results of data. Since the amount of information available may be vast, it may be extremely time-consuming and expensive to collect all the necessary data. For instance, suppose we are interested in the durability of tennis balls. Theoretically, in order to carry out an accurate assessment, we would need to collect large quantities of all different makes of tennis balls from all over the world. Clearly, this is not practical; aside from taking up lots of time, it would be cost-prohibitive to purchase all the balls we would need for our study. A more practical solution would be to use a sample.
A population consists of an entire set of objects, observations, or scores that have something in common. It comprises every possible member of the specified group. In our example above, Summary
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