Conducting a Shapiro-Wilk Normality Test in SPSS

This video demonstrates conducting the Shapiro-Wilk normality test in SPSS and interpreting the results.

[stevieporter]

I liked how well this video explains how this test can be used to accept or reject the null hypothesis.

[StefanieLyonsTIS]

Thank you! I was asked to run this test of ran assignment but was given zero instructions or even a hint of where to find it in SPSS.

[frozenheart_]

Thank you! I tried other tutorials to run a Shapiro-Wilk test but for some reason they didn't run... I tried with your video and I have results!

[victoriavanderschaaf]

Thank you for this video! Question: If my pre-test is not normally districuted, but my post-test is, what statistic test should I use to check if there is a significant difference between the means of a paired sample: T paired test or Wilcoxon test?

[sanaz]

Thank you. I have the same results for a pre and post treatment and one is not normal and the other is normally distributed. Could you please let me know what statistical test to use for such data? One way anova? or t test? Many thanks.

[msrodrigues]

Thank you so much. You are way more useful than my teacher

[Elisabethh]

I follow exactly what you do, but the shapiro-wilk doesn't show up, only the kolmogrov table showed up. Do you know why and how I can check my normality now? Thank you!

[mrsnayer]

What happen if the data is not not normally distributed like in pretest. Can we still run independent sample t-test or do we have to do something else

[shifatanowrin]

ok i understand the video, however, according to your data, as pretest and post test showing different distribution, if I want to compare the pre and post which test i should use, paired or willcoxin?

[aprilbrooks]

Shapiro Wilke is a better test in testing normality. If we are looking to find significant differences among tests, the percent values will allow us to either reject or accept the null hypothesis with confidence.

[GEORGE]

So, 1 is normally distributed and the other one is not. So, parametric or non-parametirc tests should be applied? WHy?

[matildamedley]

Hi Dr. Todd Grande, your videos are great they're helping me a lot at the moment! One question I'd like to ask. I'm trying to test the normality of my data which is skewed, however, I've read that these tests are for small sample sizes only. Is there a test that can be run to find skewness on large sample sizes? Thank you!

[rachelwilson-lowe]

This is super helpful as a refresher! Thanks for this!

[wezwang]

One thing not correct, normality should be test in separate group, you should not test the normality of group A+B but separately

[julianaguedes]

como faço para conseguir esse programa para aplicar o teste?

[sitolongges]

Thanks for this! I'm currently doing my thesis and now I understand why my other x is not significant, it's because of the normality. What can you suggest to me? Should I drop my other variable?

[tanyahollands]

Does anyone know what type of data pre and post test scores would constitute? e.g. interval, ratio, ordinal etc

[RuniaHeartz]

Good day Sir,

I am undergraduate student who needs learn biostatistics for my project...
can I ask u 1 or 2 things about choosing and how to use spss in my data...
if u wouldn't mind please, help me... i'll send my data to you Sir,

thanks a lot