What kind of data are contained in the census of population and national income estimates, for the government ?

• Primary data

• Secondary data

• Internal data

• None of these

Which of the following is a merit of a good questionnaire?

• Difficulty

• Less number of questions

• Not in proper order

• Invalid questions

Indirect oral investigation is applied when the field of investigation is limited.

• True

• False

Primary data is available in the form of published or unpublished reports.

• True

• False

___________ data need to be adjusted to suit the objective of study in hand

• Prinary

• Secondary

• Both (a) and (b)

• None of these

Data collected from 'The Hindu' is

• Primary data

• Secondary data

• Both (a) and (b)

• none of these

Methods of statistical enquiry :

• Census method

• sampling method

• both (a) and (b)

• none of these

This method involves study of each and every items of the universe

• Sampling

• Census

• Random sampling

• None of these

Census method needs less number of enumerators.

• True

• False

Which method of collection of data covers the widest area?

• Telephone interview method

• Mailed questionnaire method

• direct interview method

• all of these