If you have performed sequencing you may need a specific software for determination of normality BUT if you have performed quantitation via RT-PCR for example, the data can be analyzed via SPSS.
If you have obtained results, comparisons and analysis can be performed by SPSS alone.
I have checked the expression of both with real time PCR and have done the statistical analysis for both data sets by SPSS. Can I chech the correlation between miRNA and mRNA expression (fold change) by using Pearson or Spearman correlation test?