James,
The original design would have had one between factor and two within factors
(speed and throw). Somebody averaged across throws. So now you have a one
between and one within design. I think the results are statistically valid
given the data.
Gene Maguin
>>A friend of mine has sent me the results of some throwing accuracy tests
that he has done on cricketers and baseballers throwing at 2 different
speeds. The data I have been given is the mean accuracy for each
cricketer/ baseballer over ten throws. I cannot get acces to the raw data.
What statistical short comings would a Univariate Analysis of variance
using SPSS provide me with if I were to use the mean as the dependant
variable and the Between subject factors; Sport (baseball or cricket) and
Speed (80% or 100%. I know that I would not be able to provide any insight
as to whether a thrower's accuracy is affected by fatigue or repetition
but I would just like to know whether the results that I get from the
between subject factors would still be statistically valid despite using
the means as my dependant variable.
Sorry for sucha vague question but any response would be greatly
appreciated.
James Chiswell
Sportsdata - Statistician
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