Specimens of a light metal alloy, heat treated in various ways, were subjected to a hardness test and then their ultimate strengths were determined
Specimens of a light metal alloy, heat treated in various ways, were subjected to a hardness test and then their ultimate strengths were determined. The H row in the data table gives the Brinell
hardness number and the U row in the data table gives the ultimate strength in the
appropriate units.
H 52 54 56 57 60 61 62 64 66 68
U 12.3 12.8 12.5 13.6 14.5 13.5 15.6 16.1 14.7 16.1
H 69 70 71 71 73 76 76 77 80 83
U 15 16 16.7 17.4 15.9 16.8 17.6 19 18.6 18.9
- Using appropriate software plot a graph of this data. ( H on the “x-axis” ,
plot from 50 to 90, and U on the “y-axis” , plot from 11 to 20).
- Determine the line of linear regression.
- Determine Pearson’s coefficient of linear correlation.
- Present your results in a ‘word’ document, and comment on your findings.