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panel interviewa panel interview may be composed of either individuals or corporate units it is a convenient method of obtaining information
advantage of mail interview1 relatively low cost2 can be accomplished with minimal staff and facilities3 provides access to widely dispersed samples
mail interviewthe mail interview places a great deal of importance on the construction of the questionnaire because there is no interviewer in mail
disadvantages of telephone interviewingasampling limitations especially as a result of omitting those without telephoneb nonresponse associated with
advantages of telephone interview1 lower costs that personal interviews2 random digit idling rdd sampling of general population3 better access to
telephone interviewthe telephone interviews is used when the information to be collected is limited the telephone interview is used i lieu of
disadvantages of personal interviews1it is likely to be more costly than alternatives2 a trained staff of interviewers that is geographically near
advantages of personal interview1there are sample designs that can be implemented best by personal interview e g area probability samples2personal
unstructured and indirect interviewit has been found that the researchers face varied problems owings to the unwillingness of the respondents to
structured and indirect interview the structured and indirect interview has become a techniques of unbiased research because the biases of the
unstructured and direct interviews the structured question provide limited answers sometimes they give only two alternatives i e yes or no whereas
structured direct interviews the usual type of interview is the structured direct interview a formal questionnaires consisting of non disguised
points related to personal interviewhere the interviewer is likely to play an important role due considerations should be given to the followings
personal interviewpersonal or face to face interviewing is a core function of marketing research much of the quality of the entire research process
characteristic - interview methodsinterviewing as a method of data collection has certain characteristics they are1 the participants the
interview methodsinterviewing is one is the prominent method of data collection it may be defined as a two way systematic conversation between an
demerits of survey methods1 the first drawback of survey method is the money needed for conducting the surveys in most cases
merits of survey methodssurvey methods has followings merits in comparison to other methods 1 a survey permits the researcher to come in direct
four method of survey1 nature of the population the population maybe widely scattered then mail surveys are more appropriate and economic if the
survey methodin research surveys are most commonly used and most abused means of collecting primary data these methods are mostly used as these are
direct indirect and human mechanical observationdirect indirect observation in direct observation the behaviour of a person is observed on the other
observation under natural setting laboratory settingobservation under natural setting laboratory setting observations in field studies are in
methods of observation there many methods of observation any one of them can be used by the researcher these are as 1 structured or unstructured
criteria for the evaluation of observational studiesevaluation of observational method performed by human beings should be done in terms of
characteristics of the observed in getting information from the investigated people their characteristics play an important role the status of the