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B
a reasonable degree of accuracy
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C
a reasonable degree of inaccuracy
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D
all of the above
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Solution
The correct option is B a reasonable degree of accuracy
Statistical facts can be affected by multiple causes, there is a lot of scope for error to be embedded in the data collected, one reason is that people interviewed may be lying. There may be bias on the part of the interviewer etc. Thus large samples are taken to ensure error is reduced.