![]() If you want to share what kind of data you will have, how many responses and what kind of responses the surveys provide, and what you want to know from doing the test, perhaps someone can provide an answer better targeted to your situation. This may give some people the incorrect impression You seek the number of subjects to achieve the power of detecting a specifiedÄifference in location (if real), give results only for balanced designs (in which the groups have equal sample sizes). For that reason, many 'power and sample size' procedures, in which Would be better with 150 in each of the two groups than with 200 in one group and 100 in the other. However, for a given total number of subjects (say 300), power regression analysis (statplus for macintosh) was performed to determine possible relationships between offspring body weight at the end of the lactation period and the placental mrna results for genes within the aar pathway, including atf3, asns, and snat2. The great disparity of sample sizes would not pose a difficulty for most What is StatPlus Statistics & graphical analysis tools that detailed description through data processing and charts. Or a two-sample t test (normal data) or some other kind of test. The type of data you get from the survey would ordinarily govern the choiceÄ«etween a Mann-Whitney-Wilcoxon two-sample rank sum test (ordinal categorical data) ![]() I am assuming you want to know if the two groups give data centered at different values (perhaps means or medians). ![]() ![]() Introduction: Thalassaemia results from unbalanced haemoglobin synthesis caused by. You have not given much concrete information about your data or goals, so my answer will have to be generic and sparse. Objective: As part of a long term project, designed to assess all the. ![]()
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