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
The bass guitar (also called electric bass, or simply bass; /ËbeÉªs/) is a stringed instrument played primarily with the fingers or thumb, by plucking, slapping, popping, (rarely) strumming, tapping, thumping, or picking with a plectrum, often known as a pick.