Purchase Solution

Find Standard Deviation using the computational formula

Not what you're looking for?

Ask Custom Question

"My Bank" opens a branchin a commercial district. The bank wants to find out the waiting time of their customers during the Friday evening hours from 5pm to 8pm. Accordingly, the waiting time is recorded for all customers during these hours over a month. A random sample of 20 customers is selected; the waiting time, in minutes, is shown below:
9.50 5.0 8.02 6.00 3.40
8.33 8.35 10.49 5.32 4.08
9.20 5.40 6.17 3.00 2.32
8.35 8.02 6.00 5.15 9.00
Using the data in ungrouped form, compute the Standard Deviation, using the computational formula.

Purchase this Solution

Solution Preview

Please see attached file, but I am including text here just in case. The formula will not appear here.
<br>
<br>This is the alternate formula usually used ...

Purchase this Solution


Free BrainMass Quizzes
Measures of Central Tendency

Tests knowledge of the three main measures of central tendency, including some simple calculation questions.

Know Your Statistical Concepts

Each question is a choice-summary multiple choice question that presents you with a statistical concept and then 4 numbered statements. You must decide which (if any) of the numbered statements is/are true as they relate to the statistical concept.

Terms and Definitions for Statistics

This quiz covers basic terms and definitions of statistics.

Measures of Central Tendency

This quiz evaluates the students understanding of the measures of central tendency seen in statistics. This quiz is specifically designed to incorporate the measures of central tendency as they relate to psychological research.