Blocking the activities of gyrase and topoisomerase therefore result in major changes in DNA supercoiling, which in turn affects transcription and replication.

TLS Online TPP Program

#Id: 4906

#Unit 13. Methods in Biology

Variance is a measure of how data points vary from the mean, whereas standard deviation is the measure of the distribution of statistical data.

TLS Online TPP Program

#Id: 4908

#Unit 13. Methods in Biology

According to layman’s words, the variance is a measure of how far a set of data are dispersed out from their mean or average value. It is denoted as ‘σ²’.

TLS Online TPP Program

#Id: 4910

#Unit 13. Methods in Biology

Variance is always non-negative since each term in the variance sum is squared and therefore the result is either positive or zero.

TLS Online TPP Program

#Id: 4911

#Unit 13. Methods in Biology

Variance always has squared units. For example, the variance of a set of weights estimated in kilograms will be given in kg squared.

TLS Online TPP Program

#Id: 4912

#Unit 13. Methods in Biology

Standard Deviation - The spread of statistical data is measured by the standard deviation.

TLS Online TPP Program

#Id: 4913

#Unit 13. Methods in Biology

Standard Deviation describes the square root of the mean of the squares of all values in a data set and is also called the root-mean-square deviation.