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• In Biology

March 26,2016

### Calculators and Mobile Devices for Biostatistics

Over the years, as computing has moved from mainframes to minicomputers to personal computers to hand-held devices (calculators, tablets, and smartpho...

• In Biology

March 26,2016

### Deciding Who Will Be in a Clinical Study

Because you can’t examine the entire population of people with the condition you’re studying, you must select a representative sample from...

• In Biology

March 26,2016

### Go Outside the Norm with Nonparametric Statistics

All statistical tests are derived on the basis of some assumptions about your data, and most of the classical significan...

• In Biology

March 26,2016

### Test for Significance with Hypothesis Testing

All the famous statistical significance tests (Student t, chi-square, ANOVA, and so on) work on the same general princip...

• In Biology

March 26,2016

### Basic Mathematical Operations for Use in Statistic

The four basic mathematical operations are addition, subtraction, multiplication, and division (ah, yes — the basi...

• In Biology

March 26,2016

### How to Create a Data Dictionary to Describe Your B

Every research database, large or small, simple or complicated, should be accompanied by a data dictionary that describes the variables contained in t...

• In Biology

March 26,2016

### Human Drug Testing Phase I: Determining the Maximu

The first step (Phase I) in human drug testing is to determine how much drug you can safely give to a person, which scientists express in more-precise...

• In Biology

March 26,2016

### How to Incorporate Interim Analyses of Clinical Tr

An interim analysis is one that’s carried out before the conclusion of a clinical trial, using only the data that has been obtained so far. Inte...

• In Biology

March 26,2016

### How to Handle Multiplicity in Clinical Trial Data

Every time you perform a statistical significance test, you run a chance of being fooled by random fluctuations into thinking that some real effect is...

• In Biology

March 26,2016

### How to Deal with Missing Data from a Clinical Tria

Most clinical trials have incomplete data for one or more variables, which can be a real headache when analyzing your data. The statistical aspects of...