Classification and Tabulation of Data PPT: What is Data or Variable? Why data is called variable in statistics? What are the importance of Data Presentation? What are the methods of Data Presentation? What is meant by Graphical Representation of Data? What is ‘tabulation’? Understand the concept of ‘data table’. Things […]
Continue ReadingMonthly Archives: August 2017
Graphical Representation of Data 1: Tables and Tabulation with PPT
“Science is organized knowledge… Wisdom is organized life… Immanuel Kant What is Data or Variable? Ø Data or variables in biostatistics (statistics) are individual observations of a natural phenomenon or an experiment. Ø All scientific investigations involve observations on the variables. Ø Observations made on these variables are obtained in […]
Continue Reading
Errors in Statistics PPT (Type I and Type II Errors)
Type I and Type II Error PPT: What is Level of Significance? What is Null Hypothesis? What is Alternate Hypothesis? What are statistical errors? What is the importance of ‘level of significance’ in statistical errors? Different types of statistical errors. What is Type I Error? How to avoid Type I […]
Continue Reading
Type I and Type II Errors in Statistics (with PPT)
“An error does not become truth by reason of multiplied propagation, nor does truth become error because nobody sees it…” Mahatma Gandhi For the better understanding of statistical errors, it is essential to understand the concept of ‘Level of significance’, ‘Null hypothesis and ‘Alternate hypothesis’. What is ‘Level of Significance? […]
Continue Reading