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Mean salary? Last year a small accounting firm paid each of its five clerks \(\$ 22,000\) , two junior accountants \(\$ 50,000\) each, and the firm's owner \(\$ 270,000\) . What is the mean salary paid at this firm? How many of the employees earn less than the mean? What is the median salary? Write a sentence to describe how an unethical recruiter could use statistics to mislead prospective employees.

Short Answer

Expert verified
Mean salary is \( \$60,000 \), 7 earn less than mean, median salary is \( \$22,000 \).

Step by step solution

01

Identifying the Salaries and the Number of Employees

The salaries given are: Five clerks earn \( \\(22,000 \) each, two junior accountants earn \( \\)50,000 \) each, and one owner's salary is \( \$270,000 \). Thus, we have 8 employees in total.
02

Calculating the Total Salary Expense

The total salary expense is calculated by multiplying the number of each type of employee by their salaries and adding them together.\[5 \times 22,000 + 2 \times 50,000 + 270,000 = 110,000 + 100,000 + 270,000 = 480,000\]
03

Calculating the Mean Salary

The mean salary is found by dividing the total salary expense by the number of employees:\[\text{Mean Salary} = \frac{480,000}{8} = 60,000\]
04

Counting Employees Earning Less Than the Mean Salary

The mean salary is \( \\(60,000 \). Comparing individual salaries: The five clerks earn \( \\)22,000 \), and the two junior accountants earn \( \\(50,000 \), all of which are less than \( \\)60,000 \). In total, 7 employees earn less than the mean salary.
05

Calculating the Median Salary

To find the median, list the salaries in order: \( 22,000, 22,000, 22,000, 22,000, 22,000, 50,000, 50,000, 270,000 \). Since there are 8 salaries, the median is the average of the 4th and 5th salaries:\[\text{Median Salary} = \frac{22,000 + 22,000}{2} = 22,000\]
06

Understanding Misleading Statistics

An unethical recruiter might emphasize the mean salary of \( \\(60,000 \) to suggest higher typical earning potential, ignoring that most employees earn significantly less. The median salary of \( \\)22,000 \), reflecting a more accurate depiction of typical earnings, could be ignored.

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Median Salary
The median salary is a crucial concept when analyzing salary distributions. It represents the middle value in a list of numbers, offering a balanced perspective on what can be considered a typical salary in a given set.

To find the median salary, list all salaries in ascending order. If the total number of observations is odd, the median is the middle number. If even, like in our example where there are 8 salaries, the median is the average of the two middle numbers. Here, it is calculated as follows:
  • First five salaries are for clerks earning \(22,000 each.
  • The next two are for junior accountants earning \)50,000 each.
  • The final salary is \(270,000, for the owner.
Ordering these, the median is the average of the 4th and 5th numbers: \(\frac{22,000 + 22,000}{2} = 22,000\).

This figure, \)22,000, accurately reflects the typical earning situation for most employees at this firm.
Misleading Statistics
Statistics can sometimes be manipulated to present a skewed version of reality. This is often seen in workplaces or advertisements where a higher mean salary is used to imply that employees earn more than they actually do.

In this case, an unethical recruiter might focus on the mean salary of $60,000. At first glance, it seems attractive and suggests that employees generally earn well. However, only the owner's salary exceeds this mean, as the clerks and junior accountants earn less.

By comparing the mean to the median salary of $22,000, we see a different story. This median better represents what a typical employee earns.
  • Clerks and junior accountants, making up a majority of the employees, earn significantly below the mean.
  • Highlighting only the mean obscures the fact that 7 out of 8 employees earn less than this number.
This kind of selective highlighting can mislead individuals when making decisions based on salary data.
Calculating Mean
The mean salary is another essential figure that helps summarize the central tendency of salary data. It paints a broad picture but doesn't always represent what most employees experience.

To calculate the mean salary, sum up all salaries and divide by the total number of employees:
  • Total salary expense: \(480,000
  • Total employees: 8
Using the formula for mean, \(\text{Mean Salary} = \frac{480,000}{8} = 60,000\).

The mean salary of \)60,000 is influenced heavily by the owner's considerably higher earnings, skewing the representation.
  • While the mean provides a generalized view, it doesn't align with the salaries received by the majority of the employees, who earn substantially less.
  • 7 out of 8 employees earn below the mean, indicating that it does not accurately represent the typical earnings for the firm's staff.
Thus, while the mean can be informative, it should be considered alongside other measures like the median for a comprehensive understanding.

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