Quality assessment

When we are presented with a dataset a first question is ‘what is the quality of this data?’. Or perhaps more eloquently stated, ‘garbage in, roses out’ (Tabachnick, Fidell, and Osterlind 2001)? A first task associated with any data analysis is to assess the quality of the data.

Mitigating missingness

Imputation

Logarithmic transformation

Scaling and centering

References

Tabachnick, Barbara G, Linda S Fidell, and Steven J Osterlind. 2001. “Using Multivariate Statistics.” Allyn; Bacon Boston.


Copyright © Brian J. Knaus. All rights reserved.