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Data analysis must be used to understand the results of a survey. Otherwise, the data collected by the survey would remain a jumbled collection of data.
difference between Data Mining and OLAP
Expalain the difference between cyclical and seasonal variations in a data series?
With poor data, you could get the wrong answer to the problem, which could cost time and money in most cases.
Collection of data is data is called as database. But this is only when the data is interrelated to each other.