Shiny Application and Reproducible Pitch

Steve Dubois
December 16, 2017

#Course Project

This is the final course project for the Developing Data Products Course. The course consists on two parts:

  • Shiny app with supporting documentation
  • A presentation made through Rstudio Presentation to pitch the shiny app.

The app itsel produces a prediction of child's heights given the parents height based previously collected parent/child height data.

For this course project, we used the “Galton Families” dataset from UsingR package. It is a compilation of data collected by Sir Francis Galton in 1885, to study the relationship between parental and children heights.

Summary of Galton Family Data ###

Some more detailedinformation about the dataset: 

library(UsingR)
data(GaltonFamilies)
summary(GaltonFamilies)

     family        father         mother      midparentHeight
 185    : 15   Min.   :62.0   Min.   :58.00   Min.   :64.40  
 066    : 11   1st Qu.:68.0   1st Qu.:63.00   1st Qu.:68.14  
 120    : 11   Median :69.0   Median :64.00   Median :69.25  
 130    : 11   Mean   :69.2   Mean   :64.09   Mean   :69.21  
 166    : 11   3rd Qu.:71.0   3rd Qu.:65.88   3rd Qu.:70.14  
 097    : 10   Max.   :78.5   Max.   :70.50   Max.   :75.43  
 (Other):865                                                 
    children         childNum         gender     childHeight   
 Min.   : 1.000   Min.   : 1.000   female:453   Min.   :56.00  
 1st Qu.: 4.000   1st Qu.: 2.000   male  :481   1st Qu.:64.00  
 Median : 6.000   Median : 3.000                Median :66.50  
 Mean   : 6.171   Mean   : 3.586                Mean   :66.75  
 3rd Qu.: 8.000   3rd Qu.: 5.000                3rd Qu.:69.70  
 Max.   :15.000   Max.   :15.000                Max.   :79.00

App Directions

The appp is a simple and straight forward. appication in terms of the use of use. Once one has opened the applicaion are 4 sections to note. There are 3 step om using the app.

Plot--Parent vs Child Height--containg regression line

plot of chunk unnamed-chunk-2

Key Results

As one can see frmo the plot (with regression line) and the summary table above, there is a positive correlation beteen child heighy and parent heights.

Sources:

Galton's notebook, http://www.medicine.mcgill.ca/epidemiology/hanley/galton/notebook/, transcribed by Beverley Shipley in 2001.

References

Galton, F. (1886). Regression Towards Mediocrity in Hereditary Stature Journal of the Anthropological Institute, 15, 246-263

THANK YOU.