7.
Data:
8.
Analysis:
Both sets of data must be plotted on the same graph with an appropriate Legend to distinguish the two scatter plots. Excel will automatically color code the data points.
Judge the shape of the scatter plot and consult the Graphical Analysis
resource if
necessary, to identify what needs to be done to linearize the data, if it’s not linear. If it
is linear, plot the trend line and get the best-fit equation and R
2
value. If it is not
linear, manipulate the independent variable until it is; then add the best-fit line, along
with the equation and R
2
value. The lines must go through the origin (proportional
relationship. Include both the Raw Data and Linearized graphs in the lab report, in
that order.
Use the equations being investigated to identify the formula for the Theoretical Slope
(T.S.) and perform the calculation. The Measured Slope for each trend line is the
same and, therefore, can be averaged. Present this average value, next, without
showing the calculation, with the correct number of significant figures and units.
Lastly compare these values using a percent error:
%
error
=
|
TS
−
MS
|
TS
×
100
9.
Conclusion: Use the Graphical Analysis
resource to identify the correct relationship. Use words for the variables, rather than symbols, in the written portions of the lab. Also, the Conclusion
