Determine whether each of the following is a statistic or a parameter. After che
ID: 2945867 • Letter: D
Question
Determine whether each of the following is a statistic or a parameter. After checking computer records for every commercial movie made during a certain year, the longest running time is found to be 187.5 minutes. A recent survey of 200 college career centers reported that the average starting salary for petroleum engineering majors is $83,121. Identify the type of sampling method used for each example below. A researcher obtains a sample of elementary school teachers from Independent School District 196 by randomly selecting 10 elementary schools and interviewing all the teachers at each of these schools. Stratified Cluster Systematic Convenience A large university conducted a study of three of its college programs. 50 of 820 students majoring in communications, 50 of 1463 students majoring in business, and 50 of 760 students majoring in history were randomly selected for the sample to be used in this study. Convenience Stratified Cluster SystematicExplanation / Answer
Solution: After checking computer records for every commercial movie made during a certain year, the longest running time is found to be 187.5 minutes. Parameter
A recent survey of 200 college career centers reported that the average starting salary for petroleum engineering majors is $83,121. Statistic
A researcher obtains a sample of elementary school teachers from independent school district 196 by randomly selecting 10 elementary schools and interviewing all the teachers at each of these schools.
Answer: Cluster
A large university conducted a study of three of its college programs. 50 of 820 students majoring in communications, 50 of 1463 students majoring in business, and 50 of 760 students majoring in history were randomly selected for the sample to be used in this study.
Answer: Stratified
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