Our Tutors/Experts 
Are Available 24/7
 

Accounting  

Business Experts

Computer Science  

Credits and Debits  

e-commerce

Education

Entrepreneurs
  
Humanities  

Life Sciences  

Management  

Marketing  

Mathematics

Nursing

Social Sciences    

Statistics

Writing Experts

 

Our
Free Internet Libraries
improve grades and careers.

3 Free Business Book Summaries
Including New York Times Bestsellers

Shop 
Amazon
Textbooks
 
and Amazon
Student
 

and receive 
free gifts, 
free shipping, plus big discounts!
 


 

 

 

 

Our Statistics Tutors
can help with difficult questions.


Statistics Specialty Store


Statistics Learning Center


Our
SPSS
tutors
can help with difficult assignments.


Online Six Sigma Certification
[
Green Belt]

will improve your resume.


Chapter 1 of every ichapters' e-textbook
is Free.


Our Experts Tutors Can Help With Difficult Assignments
 
 Accounting  
Computer Science
 

e-commerce
Entrepreneurs

Life Sciences
 
Mathematics
Nursing

Statistics
Writing Services

 

 

 

Please Blog Friends About This Free Library Using

 

 

 

 

 

 

 

 

 

Part I Practice Problems on Descriptive Statistics from Formula Reviews From Quick Notes Statistics may help with these problems.
When printing, highlight just the problems and not the advertising and then choose File, Print, Section, and OK.

Telling Teachers about our site http://www.textbooksfree.org/
and these free teaching materials might help lower the cost of textbooks.

Free Book Summaries- 3 New York Times Bestsellers

Calculate the following using this sample data. Where appropriate, state the symbol for the 
measure and the formula used. Those not using a calculator or computer should show all work.

Data: 20, 6, 15, 22, 13, 9, 2, 20, 10     

Problem Answers

1.    Mean

 

 

 

2.   Median


 


3.    Mode



4.  Variance

 

 

5.    Standard Deviation

 

 

 


6    Pearson's Coefficient of skewness

 

 

 

7.    85th percentile

 

 

 

8.    Third decile


 

 

 

9.  Interquartile range

 

 

 

 

 

 

10.    Use a paragraph or two containing complete sentences to define two variables, one that is skewed positively and one that is skewed negatively. Explain why you think the data is skewed.

 





 


Problem Answers

1) 13 2) 13 3) 20 4) 47.25 5) 6.87 6) 0 7) 20.3 8) 9.2 9) 20.0 - 8.25 = 11.75 10) Income is skewed to the right. Hopefully, hours studying is skewed to the left.


Our Experts Tutors Can Help With Difficult Assignments 
 Accounting  Computer Science  e-commerce Entrepreneurs     Life Sciences  Mathematics      Nursing    Statistics
Writing Services