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Chart3

Some sample charts

Data:

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Temp Insul Age Cost
35 3 6 250
29 4 10 360
36 7 3 165
60 6 9 43
65 5 6 92
30 5 5 200
10 6 7 355
7 10 10 290
21 9 11 230
55 2 5 120
54 12 4 73
48 5 1 205
20 5 15 400
39 4 7 320
60 8 6 72
20 5 8 272
58 7 3 94
40 8 11 190
27 9 8 235
30 7 5

139

 

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Multiple regression            
ลท = bx + a x0 results weighted  
temp -4.9341922489 388.80195166 30 240.7761841922 7223.2855257675  
insul -10.9888459888 275.0291720292 5 220.0849420849 1100.4247104247  
age 17.0094339623 86.1839622642 10 256.2783018868 2562.7830188679  
    250.0050286511 217.1293708618 239.0464760547 simple average  
        241.9220723347 weighted average  
        243.8353406327 correlated average  
             
Correlations Column 1 Column 2 Column 3 Column 4    
Column 1 1          
Column 2 -0.1030161292 1        
Column 3 -0.4859876969 0.0636174022 1      
Column 4 -0.8115088355 -0.2571013347 0.5367275618 1    
0.6585465901 0.0661010963 0.2880764756 1.012724162    
correlated 0.6502724185 0.0652705829 0.2844569987 1