统计学问题求解答。。英文的 10
TIME=timetocompletethejob
PIECES=numberofpiecesinthejob
OPS=numberofopera...
TIME = time to complete the job
PIECES = number of pieces in the job
OPS = number of operations per piece
RUSH = a dummy variable equal to 1 if the job is a ‘rush’
1. Roger thought more about the production process and speculated that total machining time, expressed as the product of pieces and operations, could be a more important variable.
Create an additional variable—OPS*PIECES— by multiplying number of pieces in the job by number of operations per piece. Run new regression analysis. Explain the results.
2. Try to improve your model by removing irrelevant variables. Run new regression analysis. Explain the results.
3. What is your assessment of the time this order is going to take? Explain your view. Should Roger designate it a ‘rush’ order? Why or why not? Are there other assumptions of regression analysis you would like to check before accepting the above conclusions?
解答出来汇款10元。。 展开
PIECES = number of pieces in the job
OPS = number of operations per piece
RUSH = a dummy variable equal to 1 if the job is a ‘rush’
1. Roger thought more about the production process and speculated that total machining time, expressed as the product of pieces and operations, could be a more important variable.
Create an additional variable—OPS*PIECES— by multiplying number of pieces in the job by number of operations per piece. Run new regression analysis. Explain the results.
2. Try to improve your model by removing irrelevant variables. Run new regression analysis. Explain the results.
3. What is your assessment of the time this order is going to take? Explain your view. Should Roger designate it a ‘rush’ order? Why or why not? Are there other assumptions of regression analysis you would like to check before accepting the above conclusions?
解答出来汇款10元。。 展开
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