AboutAsmaa Abd Elhameed Ahmed 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
Question US life expectancy - 78.2
UK life expectancy79.4
Source -United Nations World Population Prospects: 2006 revision
What is the statistical significance of a difference of 1.2 years?
would the difference of the size of the respective populations (roughly 300 million verses 60 million) be a relevant factor in how significant this difference is?
is there a better way to phrase this question? Is it the right question?
Answer hi,
-to tell if there is statistically significant difference between the mean life expectancies we should do t-test
for t-test, we need the mean ,standard deviation,and sample size of the 2 groups
here we have the mean and sample size, we need the standard deviation of both groups
-a better way for the question:
Is there statistically significant difference in mean life expectancies between US and UK?
