# mid06 - ISMT111 Business Statistics Midterm Examination For...

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ISMT111 Business Statistics Midterm Examination For sections 3 & 4 only 23 rd October 2006 Directions 1) Answer ALL FIVE questions. Marks are shown in square brackets. 2) There are 4 pages in this examination paper, which includes a normal table. Check to make sure you have a complete set and notify the invigilator immediately if part of it is missing. 3) Key formulas are provided separately. 4) Calculator may be used in this examination. 5) You are given TWO HOURS to complete this examination. Do not begin until you are told to do so.

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Question 1: [15 Marks] Q u e s t i o n 2 : [ 1 8 M a r k s ] (a) Why probability can explain the variation in data sets? The following table gives the first week and annual performance of the stock market index S&P 500 from 1950 to 2003. In 34 of the 54 years from 1950 to 2003, the S&P 500 finished higher after the first 5 days of trading (first week). In 29 of those 34 years S&P 500 finished higher for the year. Answer the following questions to see if a good first week is a good forecast for the upcoming year.
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mid06 - ISMT111 Business Statistics Midterm Examination For...

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