Question

A salary survey showed the following data for secretaries:

CompanyNo of SecretariesAv Salary/Month
A10$3000
B103000
C253000
D503200

How does the weighted average salary compare with the unweighted average?

(a) it is $55 lower

(b) it is $45 lower

(c) it is $45 higher

(d) it is $55 higher

Answer

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