toller38742
Joined: 06 Mar 2009
Posts: 1
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 Posted: September 24, 2009 9:16 AM Post subject: interquartile ranges using alternative method |
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Hi,
On my stats course the interquartile range is calculated by taking the value at;
x
(1/4(n+1))
and
x
(3/4(n+1))
so for n=10, the lower quartile value would be the 2.75th value of x, ie .75 between x at 2 and x at 3.
The TI-89 calculates the lowest value of x in that range, so usually picks the 3rd value of x.
Is there an easy way to get a TI-89 to return the former interquartile ranges?
Thanks,
T |
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