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Which of the following are TRUE for data source for data analysis? (1) Data can be automatically collected by using sensors (2) Unstructured data refers

Which of the following are TRUE for data source for data analysis?

(1) Data can be automatically collected by using sensors

(2) Unstructured data refers to data that is generated in free format.

(3) Structured data is usually created by applications. No data pre-processing is needed on structured data for data analysis.

Select one:

a. (1) and (2)

b. (1) and (3)

c. (2) and (3)

d. All of the above

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