Spending per high-school student and graduation rates
  for 50 states
Table 8.6 p380 in Hollander and Wolfe 1999
 
Data:
    1.   7971   65.5      26.   3998   79.6
    2.   7151   62.3      27.   3943   85.4
    3.   6564   77.4      28.   3919   69.1
    4.   6230   84.9      29.   3858   77.3
    5.   5471   74.4      30.   3840   65.9
    6.   5329   69.8      31.   3794   76.3
    7.   5207   78.7      32.   3786   74.0
    8.   5201   74.1      33.   3744   61.1
    9.   5051   88.3      34.   3691   71.9
   10.   5017   71.7      35.   3623   75.8
   11.   4989   78.4      36.   3608   65.3
   12.   4789   73.0      37.   3519   88.3
   13.   4747   84.9      38.   3434   61.0
   14.   4692   73.6      39.   3408   64.6
   15.   4462   74.7      40.   3368   66.7
   16.   4457   74.1      41.   3249   79.6
   17.   4386   90.9      42.   3138   61.4
   18.   4369   75.6      43.   3093   71.7
   19.   4246   74.4      44.   3068   69.3
   20.   4246   87.3      45.   3011   69.0
   21.   4164   77.1      46.   2989   77.2
   22.   4149   71.6      47.   2718   74.9
   23.   4124   85.8      48.   2667   75.4
   24.   4092   58.0      49.   2548   66.9
   25.   4076   80.2      50.   2454   79.4
 
Data sorted in increasing order by X
 
n=50  X-Y pairs
  Xmin=2454   Xmax=7971   Ymin=58.0   Ymax=90.9
  Xmean=4193.0   Ymean=74.28
 
Linear smoother with
   Window size in X-values: 9   Half-width: 4
   Average window width:  721.0  Half-width:  360.5
 
Kernel smoother for Gaussian kernel with stddev=h=721.021:
(Twice the average half-width.)
 
Data is blue
Linear smoother is green (based on 9-point window)
Kernel smoother is red (based on h=721.021)