Purchase Solution

Calculating the standard deviation from a frequency table.

Not what you're looking for?

Ask Custom Question

Find the standard deviation of the data in the given frequency table. A company had 80 employees whose salaries are summarized in the frequency table below. Find the standard deviation.
Salary / Employees
5001-10000 / 17
10001-15000 / 16
15001-20000 / 20
20001-25000 /15
25001-30000 /12

Purchase this Solution

Solution Preview

Assuming uniform distribution within each salary range (local means are in the midpoints), ...

Purchase this Solution


Free BrainMass Quizzes
Geometry - Real Life Application Problems

Understanding of how geometry applies to in real-world contexts

Solving quadratic inequalities

This quiz test you on how well you are familiar with solving quadratic inequalities.

Know Your Linear Equations

Each question is a choice-summary multiple choice question that will present you with a linear equation and then make 4 statements about that equation. You must determine which of the 4 statements are true (if any) in regards to the equation.

Probability Quiz

Some questions on probability

Exponential Expressions

In this quiz, you will have a chance to practice basic terminology of exponential expressions and how to evaluate them.