2. Draw the "min" line, which has as small a slope as you believe is feasible (including error bars) while still adequately capturing all of the data. Measure the line's slope.
3. Draw the "max" line, which has as steep a slope as you believe is feasible (considering the error bars) while still adequately capturing all of the data. Measure the line's slope.
4. Calculate the slope uncertainty as one-half of the difference between the maximum and minimum slopes.
“best” slope =
“min” slope =
“max” slope =
Uncertainty in slope is
Based on the uncertainty, the slope has no more than two significant digits. As a result, we might conclude that the graph demonstrates:
slope =