The residual value when x = 4 is 0.58.
In statistical models, a residual is the difference between the observed value and the mean value that the model predicts for that observation.
The line that fits the data
y = 2.78x-4.4
At x = 4 ,
y= 2.78*4 -4.4
y = 6.72
The experimental value is 7.3 and the predicted value is 6.72
Residual = Experimental value- Predicted Value
Residual value = 7.3-6.72
= 0.58
Hence the residual value when x = 4 is 0.58.
To know more about residual value
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