Mat 300 week 9 discussion ***** please original work only*********


"Correlation and Regression

View the 2014 SAT Scores by State: http://www.commonwealthfoundation.org/policyblog/detail/sat-scores-by-state-2014

Using Microsoft Excel, inhale a scatterplot of the Community Rebuke (x-axis) vs. In-one SAT Scores (y-axis). DO NOT USE THE %-SYMBOLS when putting the facts into the spreadsheet. ALSO, DO NOT exexchange the percents to decimals. For illustration, North Dakota has a community rebuke of 2.3% and a in-one SAT charges of 1816. In the Excel spreadsheet, you would solely input 2.3 & 1816 for the North Dakota facts. Provide a representation of your scatterplot in the discourse length.

Once you inhale the scatterplot, picture the intercommunity between community rebuke and in-one SAT chargess. Make unquestioning you set-forth whether it is a unconditional or privative intercommunity and whether the intercommunity is hearty, abstinent, or milk-and-water. Also, what does this intercommunity say in “simple expression?”

Find the appraise of the interdependence coefficient (r) and teach what that resources in intercommunity to the tenor. 

Find the equation of the last squares retirement length.

 

Use the equation of the last squares retirement length to “predict” the in-one SAT charges for a set-forth whose community rebuke is 21.8%. Does “interdependence mean causation?” Use the illustration of SAT chargess and community rebuke to debate this delay your classmates.