Please see directions in attached file.
I listed the Levels of Research Hierarchy immediately below.
Level 1 – Systematic review and Meta Analysis
Level II – Randomized Control or Experimental
Level III – Quasi Experimental
Level IV – Descriptive correlation, Predictive Correlation and Cohort studies
Level V – Mixed Methods systematic review and qualitative meta-synthesis
Level VI – Descriptive Study
Level VII – Opinions of expert committees and authorities.