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Stories Told by a Graph

It is claimed that its better to hire a manager from outside a firm than promote one from within. A human resources analyst at a firm justifies this claim by showing that average performance evaluations tend to be significantly higher for managers hired from outside the firm compared with those promoted from within.

Look at the graph of salary versus performance evaluation in Figure 5.3 for managers at the same level at the firm.

[See attachment.]

Is it true that average performance evaluation is higher for managers hired from outside the firm compared with those promoted from within? What other stories does this graph tell?

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It *is* true that the average performance evaluation is higher for managers hired from outside the firm compared to those promoted from within. You can tell this because the black dots (hired from outside) are more to the right of the graph than the grey dots (promoted from within). ...

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