Posted by **angel** on Saturday, May 19, 2007 at 6:02pm.

The data in table below gives marks for an exam of a particular tutors students in 2005 and 2006.

Year students marks on the exam

2005 75 86 91 65 83 75 88 90 66 99

2006 60 78 75 98 79 90 80 88 81 90

from the following choose two options which are true about the table above.

a) the mean of the 2005 marks are greater than the mean of 2006 marks.

b) The interquartile range of the 2005 marks is more than the interquartile range of the 2006 marks.

c) The median of the 2005 marks is less than the median of the 2006 marks.

d) The standard deviation of the 2005 marks is the same as the standard deviation of the 2006 marks.

e) The range of the 2005 is greater than the range of the 2006 marks.

f) The relative spread of the 2005 marks is greater than the relative spread of 2006 marks.

g) The lower quartile of the 2005 marks is the same as the lower quartile of the 2006 marks.

h) The upper quartile of the 2005 marks is greater than the upper quartile of the 2006 marks.

wod it be c and e ?

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