Dr. Anthony A. Walsh
Adobe Acrobat Reader Required
Statistical Methods in Behavioral Science Resources Page
/ Frequency Practice Problem ~ BETA Solution
|
Carry out all calculations to NO LESS THAN 3 decimal places in this class. Check the 4th place number for rounding action! If the 4th place digit is 5 or larger, leave it there OR drop it AND increase the third place digit by 1. If you have a number such as 23.3496, you could report the result as EITHER 23.350 OR 23.3496. Technically, the latter answer, 23.3496 is the more accurate. You loose accuracy with too much rounding. View some other examples here And, if you would like to practice rounding on a REALLY BIG NUMBER, try this one.
Please Note: The exceptions to the "Carry All Work Out to Three Decimal Places Rule" occur when reporting percentiles and "standard scores" such as the SAT & GRE Scores, IQ Scores such as the WAIS or Stanford Binet Scores, and others. When reporting percentiles and standard scores, ALWAYS ROUND YOUR FINAL ANSWER TO A WHOLE NUMBER.
|
| Stay Cool! |
| Exam One Problem Solutions: February 9, 2010 | ||||
| Answers 1~10 | Problems 11 & 12 | Problems 13 & 14 | Problems 15 - 17 | |
Vintage Date ~ 18-Feb-2010
| Sample Exam Problem Solutions plus Procedures for Presenting Advanced Problem Solutions on Exams | |||
| Presentation requirements on Exams for Advanced Problems
/ Model~1 Advanced Problem Solution & Key/MODEL~2 |
Standard Scores Problem 2 Solution
 = | 
| (Fo - Fe)2
Fe |
05-Nov-08
/ Spearman's rho~2(More Detail on rho)
| Statistical Results versus Outcome Statements ~Pearson r |
t-test Outcome Scenario B t-test Outcome Scenario C
[25-November-2008 Version]
Other related and/or helpful links
Return to Dr. Walsh's Home
Page
These line items require the free Adobe Acrobat Reader© plugin.
Return to Dr.
Walsh's Classroom Links Page
These pages were created and are maintained by, Dr. Anthony A. Walsh. They first went on-line in early January, 1996. Contact him directly if you have comments or questions at: walsh@salve.edu---100 Ochre Point Avenue, Newport, Rhode Island USA 02840 | 401.341.3120--- Revised: February 10, 2010[ Cybercuriosities ]
