After reading this article you will learn about the measures of dispersion which is designed to state numerically the extent to which individual observation vary in the average. Range: It is the difference between the largest and smallest observation. Range = Maximum value — Minimum value. Mean Deviation: Mean deviation is the arithmetic mean of absolute deviation from mean or [...]
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 [...]
The following points highlight the top four types of tests of significance in statistics. The types are: 1. Student's T-Test or T-Test 2. F-test or Variance Ratio Test 3. Fisher's Z-Test or Z-Test 4. X2-Test (Chi-Square Test). Test of Significance: Type # 1. Student's T-Test or T-Test: It is one of the simplest tests used for drawing conclusions or interpretations [...]