Read draft, twbx files attached and review the worksheets and data sources. Mak

Read draft, twbx files attached and review the worksheets and data sources.
Make at least three substantial comments/suggestions (at least 100 words each). 
Requirements for your three comments:
(2 * 10pts = 20 pts) For two of your comments, review two of the six charts in their draft. For each chart:

Review the worksheet and data source in Tableau.  Do their numbers make sense? Are appropriate aggregations performed?  Is the data source appropriate (data formatted correctly)? To receive full credit, please demonstrate that you opened their Tableau files and reviewed the data source and worksheets. 
Name or list any problems and suggest solutions.  If you cannot find any problems, describe how the chart demonstrates concepts or principles that we have covered.  Similar to your discussion posts, remember to tell your reader where in the readings and materials you found the concepts. 

(10pts) One of your comments should address other elements of their draft. Some examples: Did they ask good questions and use the right charts to address those questions? Did they make appropriate conclusions? 
Other recommended exercises in your review:
Each comment should help improve this project. 
Each comment should give enough context to help all readers learn. 
Each comment should quote or reference at least one of our class materials and apply a concept that we have covered. 
Please make sure the readers can easily follow your comments and find the sections/graphs that you refer to.