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asig1sol - STAT 2507 Solutions to Assignment 1 Fall 2010...

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STAT 2507 Solutions to Assignment # 1 Fall 2010 Last Name ——————————————- , First ———————- Student # ———————— Lab group ( A 1 , · · · , A 8 , B 1 , · · · , B 5 , or C 1 , · · · , C 6 ) ———————– Due Wed. Oct. 13 IN CLASS. Total mark=100. There are 10 problems (totaling 20 questions). Independent of its difficulty or its answer’s length, each question is worth 5 marks. Data used in this lab are in the Excel file on WEBCT of the course. You will need to copy the data from Excel and paste them into a Minitab worksheet (Open such a worksheet by double-clicking on Minitab). Part I. Lab questions. Do not include ANY Minitab code or graph to your assignment. Use spaces left to answer lab questions. 1. The Data in columns A and B were collected on the amount of income tax payable (ITP) for clients of an accounting firm. Construct a bar chart corresponding to this frequency table and find the ITP mode for this set of data? $20,000 to $30,000 2. The weekly weights (in pounds) of plastic discarded by 62 households are listed in column D. Construct a stem-and-leaf chart for this set of data to answer the following questions: a. How many families have plastic waste weighing below 1 pound? 14 b. How many families have plastic waste weighing 3 pounds or more? 9 c. Roughly what is the weekly median plastic waste? about 1.5 or 1.6
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