CBSE Notes, Lectures

CBSE - Mathematics - Statistics

Statistics

NCERT Exercise Exercise 14.1

Classify the data in Q1 above as primary or secondary data.

The information which is collected by the investigator himself with a definite objective in his mind is called as primary data
when the information is gathered from a source which already had the information stored, it is called as secondary data.
It can be observed that the data in 1, 3, and 5 is secondary data and the data in 2 and 4 is primary data.

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