collection of data

What is First hand data

• Primary

• Secondary

Respondant is one who gives

• Response to the investigator

• Takes interviews

Pilot survey is

• Pre-testing of the questionnaire

• Completing the survey

Example of secondary data is

• Newspaper

• Field enquiry

Which survey requires more time and money

• Census

• Survey

A few units drawn out from the total is called

• Sample

• Example

Which of the errors are more serious

• Sampling error

• Non-sampling error

Which of the errors can be minimised by taking a larger sample

• Sampling error

• Non-sampling error

What is a form containing a set of questions related with the field of enquiry called

• Questionnaire

• Interview

Total units under study means

• Aggregate

• Population