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External secondary data - data that is obtained outside the firm itself.
No. While technically 'data' is the plural of 'datum', it is used as a singular collective noun, at least in current US English. e.g. The data has been obtained. The data was corrupted. Little data exists to support the claim.
Original information from grouped data can be obtained
quantitative data is the characteristics obtained from an experiment usually the best way to collect quantitative data is to observe your subject.
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