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Sampling is a crucial method used in data analysis because it allows analysts to infer characteristics of a larger population without the need for examining every individual data point, which would be time-consuming and expensive. By selecting a representative subset of the population, it is possible to obtain insights with a reduced cost and effort while maintaining the accuracy of the analysis. Sampling also enables quicker data processing and makes it feasible to handle large datasets that would otherwise be computationally expensive or impractical to analyze entirely. Proper sampling methods, such as simple random sampling or stratified sampling, ensure that the sample is representative, reducing the risk of bias. Why Other Options Are Incorrect: • A: While sampling may reduce errors, it does not guarantee an error-free data collection process. • B: Sampling does not eliminate redundancy but rather focuses on selecting a representative subset. • C: Sampling helps in approximating the population characteristics, but it may introduce some error, so it does not guarantee more accurate results. • E: Sampling still often requires complex statistical models to ensure that the sample is representative and that the analysis is valid.
Find the wrong number in the series.
12, 237, 406, 527, 604, 657
Four males P1, P2, P3 and P4 are sitting in a row facing towards the North (not necessarily in the same order) and four females A1, A2, A3 and A4 are si...
If 'I' stands for '+', 'J' stands for '×', 'K' stands for '÷' and 'L' stands for '–' what will come in place of the question mark (?) in the followi...
Select the correct option from the following options which could create a full square (3 out of 5 images below):
Given in the table are the number codes for the given letters. Select the combination of numbers so that the letters arranged accordingly will form a me...
In a certain code language, 'COURAGE' is written as 'VPDQFHB' and 'MAGICAL' is written as 'HBNHMBD'. How will 'HOSTELS' be written in that language?
Select the option that is related to the third word in the same way as the second word is related to the first word (The words must be considered as mea...
A number has been denoted to each of the given letters. Select the option from the following four possible arrangements of these numbers that forms a me...
Select the figure that will come next in the following series.
Select the option that is related to the third word in the same way as the second word is related to the first word.
Bicycle : Pedal :: Car:?