The data below was obtained from a creep test performed at room temperature on a wire composed of 40% tin, 60% lead, and solid core solder. This was done by measuring the increase in strain over time while a constant load was applied to a test specimen.

Using a linear regression method, find (a) The equation of the line that best fits the data and (b) The r2 value. Plot your results. Does the line pass through the origin-that is, at time zero-should there be any strain? If the line does not pass through the origin, force it to do so. Does this new line represent the data trend? Suggest a new equation that satisfies zero strain at zero time and also represents the data trendwell.

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Time, Time, min Strain, Time, min Strain, Strain, min 0.43 0 10 3.589 4,089 4.590 0.085 0.580 1.086 0.26 0 30 7.592 8.003 8 593 0.45 0.13 0. 16 0.18 0.20 0.23 0.25 0.47 0.34 1 587 2.087 2.588 3.088 0.50 5 090 5.591 9.094 9.594 10.097 0.37 0.39 6.001 0.54 0.56 0.41 6 592