A company's database has the following variables:

a. Number of employees
b. Number of job vacancies
c. Industry

A task is given to compute the mean value of these variables. What is the actual number of variables for which the mean can be computed?

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None of the variables

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Solution

The correct option is B 2
Since the number of employees and number of job vacancies are quantitative variables, we can compute the mean value for these variables.
Hence, there are 2 variables for which the mean can be computed.

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\sum_{i = 1}^{n} {(x_{i} - a)}^{2} .

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