QUESTION $3$

Using the data from Radasys Resources' current promotion assessment cycle, calculate both the variance and standard deviation of the scores for the $50$ candidates, and discuss the significance of the standard deviation in the context of the current promotion assessment cycle at Radasys Resources.

A$.$ The variance and standard deviation are $302\mathrm{.}2$ and $27\mathrm{.}4\%,$ respectively. The $27\mathrm{.}4\%$ standard deviation suggests further investigation into factors driving disproportionate variations in candidate scores.

B$.$ The variance and standard deviation are $322\mathrm{.}2$ and $27\mathrm{.}4\%,$ respectively. The $27\mathrm{.}4\%$ standard deviation calls for a review of whether the promotion assessment aligns with its objectives.

C$.$ The variance and standard deviation are $302\mathrm{.}2$ and $17\mathrm{.}4\%,$ respectively. The $17\mathrm{.}4\%$ standard deviation highlights the need for a review of how promotion criteria are applied.

D$.$ The variance and standard deviation are $322\mathrm{.}2$ and $17\mathrm{.}4\%,$ respectively. The $17\mathrm{.}4\%$ standard deviation suggests scrutiny of the objectivity of the promotion assessment.