A private university is trying to determine if there is pay equity among the male and female faculty.A simple random sample of six faculty members was selected from each gender group and the salary was recorded.The data (in thousands) are shown below. 
What is the standard deviation for the sum of the ranks for the male faculty?
Definitions:
Residual
The difference between an observed value and the value predicted by a model.
Scatter Diagram
A scatter diagram, or scatter plot, is a type of plot or mathematical diagram using Cartesian coordinates to display values for typically two variables for a set of data, indicating the relationship between them.
Fitted Value
A numerical estimate or prediction obtained from a regression model that corresponds to a specific set of explanatory variables.
Starting Salary
The initial wage or remuneration an employee receives when beginning a new job.
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