======= Date Modified 14 Jul 2011 20:13:56 =======
hi im doing the stats for my msc disso at the moment, testing the data to see if it meets the parametric assuptions i looked through my notes and realised that there are 2 ways to use the Kolmogorov-Smirnov test.
1) Analyze-Nonparametric Tests-1-Sample K-S… place h variables in the Test Variable List… box, click OK
2) Analze - Descriptive Statistics, then Explore, plots button. Under descriptives click on the Histogram. Click on Normality plots with test.
i get differnce answers for both: 1) non-sig 2) sig. i want to use it to test normality ideally using 1)
i have got 6 variables (interval)
sample size is 185 and even thou ive got 2 groups (gender) i want to test it as a whole sample so i would assume 1) NPAR method is acceptable or am i wrong??
hope this makes sense
The K-S test is dodgy at the best of times, out of about 40 students, I get about 35 each year with sig K-S tests. I'd report it, but then say after you inspected histograms, skewness and kurtosis values were deemed to be acceptable (reference here) and therefore the data was treated using parametric analyses (if you actually think the histograms do look normal).
check the normality within each group. Although if you have 6 variables you may want to consider a MANOVA, if they are all dependant variables, or at least make sure you make a boneferroni correction to your p value.
PostgraduateForum Is a trading name of FindAUniversity Ltd
FindAUniversity Ltd, 77 Sidney St, Sheffield, S1 4RG, UK. Tel +44 (0) 114 268 4940 Fax: +44 (0) 114 268 5766
An active and supportive community.
Support and advice from your peers.
Your postgraduate questions answered.
Use your experience to help others.
Enter your email address below to get started with your forum account
Enter your username below to login to your account
An email has been sent to your email account along with instructions on how to reset your password. If you do not recieve your email, or have any futher problems accessing your account, then please contact our customer support.
or continue as guest
To ensure all features on our website work properly, your computer, tablet or mobile needs to accept cookies. Our cookies don’t store your personal information, but provide us with anonymous information about use of the website and help us recognise you so we can offer you services more relevant to you. For more information please read our privacy policy
Agree Agree