(Students Must Compute the Range Per Sample and Overall R-Bar) $\text { Table 1-SPC Problem Data }$

question 25

Multiple Choice

(Students must compute the range per sample and overall r-bar)
$\text { Table 1-SPC Problem Data }$
$\text { Observation Number }$
$\begin{array}{|c|r|r|r|r|c|}\hline \text { Sample number } &1&2&3& 4 & 5 \\\hline 1 & 10.1 & 10.6 & 9.8 & 9.9 & 10.9 \\2 & 9.7 & 9.5 & 10.3 & 9.9 & 10.5 \\3 & 10.1 & 10.7 & 9.2 & 10.0 & 10.1 \\4 & 9.9 & 9.8 & 10.5 & 10.4 & 10.1 \\5 & 10.4 & 10.1 & 10.9 & 9.9 & 10.3 \\\hline\end{array}$
-Given the previous results and analysis for the R-chart, one would:

• A) conclude that the R-chart is in statistical control, and proceed to develop the x-bar chart.
• B) conclude that the R-chart is not in statistical control, and proceed to develop the x-bar chart.
• C) investigate sample # 3 as it is outside the R-chart control limits and redo the R-chart.
• D) conclude that the variation is not random, and therefore all samples should be investigated.

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Definitions:

Enhanced Surface Area

The increase in the surface area of a material, often to improve its reactivity, adsorption properties, or efficiency in catalytic processes.

Heterogeneous Catalysis

A process where the catalyst is in a different phase than the reactants, facilitating chemical reactions without being consumed.

Catalytic Sites

Specific regions on a catalyst where substrate molecules bind and undergo a chemical reaction.

Energy Level Diagram

A visual representation of the energy states of electrons in an atom or molecule and the transitions between these states.