This article provides a study note on analysis of variance. It is a measure of variation among treatments/genotypes/replications, etc., and is obtained by dividing the sum of squares (SS) by corresponding degrees of freedom (n — 1) to get mean sum of squares (MSS), i.e., variance. Variance parameter widely used in statistical analysis is the comparison among different sample means. [...]
The following points highlight the top seven statistical procedures of biostatistics. The procedures are: 1. Calculation of Average or Central Tendency 2. Variability 3. Standard Deviation 4. Standard Error of Mean 5. Significance of Difference in Means of Small Samples or Student's 't' Test 6. Chi-Square Test (x2-Test) 7. Analysis of Variance (ANOVA). Procedure # 1. Calculation of Averages or [...]
In this article we will discuss about Arithmetic Mean:- 1. Meaning of Arithmetic Mean 2. Short Cut Method of Determining Arithmetic Mean 3. Merits 4. Demerits. Meaning of Arithmetic Mean: The mean is a measurement of unit most frequently used to describe a frequency distribution of same type. The arithmetic mean or average is calculated by dividing the sum (total) [...]