That arises from inaccurate sampling frame, data clarification or verification methods, reporting or coding of data, and/or specifications. It may also arise from poorly designed survey questionnaires, improper sample allocation and selection procedures, and/or errors in estimation methodology.
riff (rÉªf) n. 1. an ostinato melodic phrase accompanying a soloist in jazz or rock music. 2. any variation or improvisation, as on an idea. v.i. 3. to perform a riff. [1930â35; perhaps alter. of refrain 2] riff Past participle: riffed Gerund: riffing
Definition of Motif. A motif is a narrative element with symbolic meaning that repeats throughout a work of literature. Motifs may come in the form of reoccurring imagery, language, structure, or contrasts. In drama, motifs may also take the form of repeated music, visual components, or physical movements. The development of motifs in a work of literature often contributes to mood and/or theme. The word âmotifâ comes from the French for âa dominant ideaâ or âtheme.â.