You are here:
- Home
- Science
- Mathematics
- Probability & Statistics
Probability & Statistics/Questions Answered by Expert Asmaa Abd Elhameed Ahmed
| Subject | Date Asked |
| Statistical Analysis | 7/13/2010 |
| Q: I am an undergraduate student in pakistan researching the acceptance of evolutionary theory in ... A: -the dependent variable is "the appreciation" -the independent are"aceptance,knowledge -regression ... | |
| statisics | 5/29/2010 |
| Q: sir, what is the difference between independent t-test and pair t-test? what is the difference ... A: independent t test or student test is used to test the difference of quantitative variable between 2 ... | |
| Please help! 15 hours until my stats test and I am so lost. | 2/18/2010 |
| Q: If you could help I would appreciate it so much! I know the time restraints are difficult but I ... A: Q1: by chi square test: Chi-square = 22.006 DF ... | |
| alpha level | 2/13/2010 |
| Q: What determines alpha? If you decide that alpha will be 3%, what would you do differently in the ... A: the level of significance(alpha) is predetermined by the researcher, (it is the accepted level of ... | |
| stat test | 10/4/2009 |
| Q: when using the mann-whitney ranking test, can I use it on both untransformed and log transformed ... A: Mann-Whitney test used to compare quantitative not normally distributed data between 2 groups or ... | |
| sample design | 9/29/2009 |
| Q: can you explain the sampling design flaws in the make belief experiment below? I think he is ... A: 1-first he should do sampling by cluster random sampling i.e.he should consider each of the great ... | |
| The statistical significance of a difference of 1.2 years between the UK and US life expectancies? | 9/12/2009 |
| Q: US life expectancy - 78.2 UK life expectancy79.4 Source -United Nations World Population Prospects: ... A: -to tell if there is statistically significant difference between the mean life expectancies we ... | |
| Comparison of ratios and percentages of 3 or more groups | 7/28/2009 |
| Q: we studied the effects of a drug given by four different methods in patients of asthma and measured ... A: K-S test (kolmogrove-Smirnov test)is a test of normality It is used to explore the distribution of ... | |
| Comparison of ratios and percentages of 3 or more groups | 7/25/2009 |
| Q: we studied the effects of a drug given by four different methods in patients of asthma and measured ... A: yes, you will use one way ANOVA test if normally distributed data, if the data is not normally ... | |
| Mann Whitney U | 7/21/2009 |
| Q: I have two samples with Na=6 and Nb=8. When I sum the ranks, sample A is 61 and sample B is 44. ... A: Mann whitney U is calculated according to the following equation,not the smaller sum of ranks: ... | |
| Medical Statistics | 7/15/2009 |
| Q: I have a hypothetical situation: Drugs A and B are available to Emergency Medical Technicians ... A: welcome, here we do chi square test,by SPSS program the result was: there is statistically ... | |
Asmaa Abd Elhameed Ahmed
Top Expert on this page
Expertise
Medical Statistics,how to choose your statistical test, statistical tests using SPSS program ,Research design ,sample size calculation
Experience
Demonstrator in Biomedical informatics &Medical Statistics department
,Alexandria university
Organizations
Medical Research Institute,Alexandria university
Egypt
Education/Credentials
B.Sc. of Medicine, Faculty of Medicine,Alexandria university
candidate for Master degree in Medical Statistics
©2012 About.com, a part of The New York Times Company. All rights reserved.