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The estimated propensity score equation is available upon request.) The matched sample is then weighted using propensity score deciles, as described in Ansolabehere and Rivers (2013). The method of inviting respondents means that invitations are shared by multiple studies, so it is impossible to identify a participation rate for individual studies.
Probability samples are highly affected by problems of non-coverage (not all members of the general population have Internet access) and frame problems (online survey invitations are most conveniently distributed using e-mail, but there are no e-mail directories of the general population that might be used as a sampling frame).
The received wisdom in education is that open questions are broadly speaking 'good' questions. They invite students to give longer responses that demonstrate their understanding.
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An interview in qualitative research is a conversation where questions are asked to elicit information. The interviewer is usually a professional or paid researcher, sometimes trained, who poses questions to the interviewee , in an alternating series of usually brief questions and answers.
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[7] [8] One type of job interview is a case interview in which the applicant is presented with a question or task or challenge, and asked to resolve the situation. [9] Candidates may be treated to a mock interview as a training exercise to prepare the respondent to handle questions in the subsequent 'real' interview.
[5] [6] In some instances, an application is effectively used to dissuade "walk-in" applicants, serving as a barrier between the applicant and a job interview with the person who has the authority to hire. [7] For many businesses, applications for employment can be filled out online, rather than submitted in person.