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
Review: RIFF-it. RIFF-it good. I'm a bad imitator of a boy in the sky. With a cap on his head and a knot in his tie. I'm the light in the mall when the power is gone. A shadow in a corner. Just playin' along! I'm gonna lay in my bed, I'm rolling aside. But if I get a car. A moment to ride. Because I know if I ever tear living with you.