Charge–charge (ionic) interactions

These interactions occur between the side chains of oppositely charged residues as well as between the NH3+ and COO− groups at the ends of polypeptide.

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#Unit 13. Methods in Biology

Cumulative Probability Distribution

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#Unit 13. Methods in Biology

A distribution is called a discrete probability distribution, where the set of outcomes are discrete in nature.

For example, if a dice is rolled, then all the possible outcomes are discrete and give a mass of outcomes. It is also known as the probability mass function.

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#Unit 13. Methods in Biology

So, the outcomes of binomial distribution consist of n repeated trials and the outcome may or may not occur. The formula for the binomial distribution is;

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#Unit 13. Methods in Biology

The probability distribution of a statistic, from a particular population, over many random samples is the sampling distribution.

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#Unit 13. Methods in Biology

The sampling distribution gives us a smaller range of the possible outcomes or results from a large range of data.

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#Unit 13. Methods in Biology

The key difference between parametric and nonparametric test is that the parametric test relies on statistical distributions in data whereas nonparametric do not depend on any distribution.