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Exam2PractAnswers - STAT 110 Fall 2009 Section 4 Practice...

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STAT 110 – Fall 2009 – Section 4 – Practice Exam 2 Solutions 1) The Duke Talent Search uses the SAT to screen middle-school students for its program. A reviewer of the program doesn’t like this because they think the scores of each student tend to differ a great deal when that same student takes two different forms of the SAT. This reviewer is criticizing what part of using the SAT for this program? c) The Reliability 2) The Duke Talent Search uses the SAT to screen middle-school students for its program. A reviewer of the program doesn’t like this because the SAT is designed to measure how academically qualified students are after they have finished high school, and not how ready they are for a middle school program. This reviewer is criticizing what part of using the SAT for this program? d) The Validity 3) One way of looking at measurement is to say that: measured value = true value + bias + random error Having a lot of bias would indicate that the measurement was: b) Not Valid 4) In the pictogram to the right, box B is 1 tall and 1 wide.
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