(Solution) - The data below was obtained from a creep test performed -(2025 Original AI-Free Solution)

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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.