Documenting two different statistic outcomes...

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se33
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Joined: Thu Apr 07, 2016 11:15 am

Documenting two different statistic outcomes...

Postby se33 » Thu Apr 07, 2016 11:18 am

As part of a wider effort / project I am currently trying to figure out if there is a statistically significant difference between the two ear canal volume speeds (50daPa/s and 300daPa/s) with an age cut off point of under 17 months and over 17 months.

The equal variance level for 50daPa/s sig=.031 but the 300daPa/s equal variance level sig = .098. Do you have any suggestions of how I can report this in my write up?

Image

Any feedback gratefully received, Stephen.
statman
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Re: Documenting two different statistic outcomes...

Postby statman » Thu Apr 07, 2016 12:35 pm

Carefully! The case count for the <17 is much too small for a valid comparison
See the note below

NOTE: Please read the Posting Guidelines and always tell us your OS, the SPSS version and information about your study and data!

Statman
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se33
Posts: 2
Joined: Thu Apr 07, 2016 11:15 am

Re: Documenting two different statistic outcomes...

Postby se33 » Thu Apr 07, 2016 3:45 pm

Thanks for the reply.

Point taken... However, what percentage (at least) would be required to make a fair comparison?
statman
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Re: Documenting two different statistic outcomes...

Postby statman » Thu Apr 07, 2016 8:02 pm

Generally, data stability favors 100+ cases

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