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Statistical Data : Primary Data and Seco...

Statistical Data : Primary Data and Secondary Data.

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Primary And Secondary Data

Introduction|| Collection OF Data||Primary and Secondary Data|| classes|| Class interval|| Class size ( range )|| Presentation OF Group data & Single data ( ungrouped data )||Tally mark||Frequency distribution table

Differentiate between primary and secondary data.

What are (i) primary data? (ii) secondary data? Which of the two -- the primary or the secondary data -- is more reliable and why?

Classify the data in Q.1above as primary or secondary data.