I'd like to check my data for normality but I'm not sure how. I'm comparing different motion capturing systems with each other in terms of their accuracy. Therefore, I record the gait of a subject. This gait data is then normalized between 1-100%. Thus, there is a value for each percentage of the gait movement.

Because I want to perform an ANOVA, as far as I know, I need to check the normality of residuals.

In other tutorials of the internet, there is usually 1 value that is related to 1 person. In my case, I have 1 person that has 100 values (each % of the gait). How exactly do I check the normality? In SPSS do I just put in all 100 values and assign them to system 1 and then the next 100 value for system 2 and so on?

Any help is greatly aprecciated. Thank you!