Epidemiology / Pt Mg NBDE2

[Luis H]

hi every one

I think that i under stimate this part of the NBDE2 , in my case i put a lot more attetion in pharm,path &clinical than to this particular topic but there is for shure Qs about this .

Feel free to add any infomation, links and questions that help to cover this topic

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[Luis H]

A t-test is any statistical hypothesis test in which the test statistic follows a Student's t distribution if the null hypothesis is supported. It is most commonly applied when the test statistic would follow a normal distribution if the value of a scaling term in the test statistic were known.

http://en.wikipedia.org/wiki/Student's_t-test

A chi-squared test, also referred to as chi-square test or test, is any statistical hypothesis test in which the sampling distribution of the test statistic is a chi-squared distribution when the null hypothesis is true, or any in which this is asymptotically true, meaning that the sampling distribution (if the null hypothesis is true) can be made to approximate a chi-squared distribution as closely as desired by making the sample size large enough.

http://en.wikipedia.org/wiki/Chi-squared_test