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ISMT111 Business Statistics
Midterm Examination
For sections 5 & 6 only
18 October 2007
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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View Full DocumentQuestion 1:
[15 Marks]
The stemandleaf displays of scores for two groups of students taking the same
examination from a statistic course is given below.
(a)
Please describe the shape of the score distribution for Group I.
(b)
Although the mean of Group II 74.0 is lower than 75.29 for Group I, after checking
other descriptive statistics, the instructor of the statistics course concluded that Group
II did better in the examination. Please give as many reasons as possible to support
the instructor’s conclusion.
0
0
0
1
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