Product range registration
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Phone interviews
- Control - 30%
- Repeated interview - 10%
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Street interviews
- Control of the work of interviewers by supervisor on set places - 30%
- Phone control - 30%
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Expert interviews
- Phone control - 50%
- In case of recording of interview – 100% control
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Hall-test
- Total control of required method of interviewr by supervisor
- Phone control - 10%
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Household surveys
- Phone control - 30%
- Control on route - 20%
- Repeated interview - 10%
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