Draw a scatter diagram for the following data where it is suggested that df (defective fraction)is a function of temperature T. Note the following definition of T.
Sample No. T df
1 120 80
2 110 75
3 105 65
4 112 73
5 118 78
T is the temperature of the plating tank and df is the measure of defective parts per thousand, after plating. Does there seem to be a special relationship (correlation) between T and df? Using the the QMpom module called Forecasting Models (Linear Regression)will facilitate. Include the correlation coefficient in the discussion.