Biostatistics Tabulation of data
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Tabulation is the process of organizing data into a table with rows and columns for easy statistical processing, presentation, and interpretation. There are several objectives and benefits to tabulating data, including to carry out investigations, make comparisons, locate errors, use space efficiently, and study trends. There are three main methods of tabulation: simple, double, and complex. Simple tabulation uses one characteristic, double uses two characteristics, and complex tabulates data using more than two characteristics, arranged into rows and columns.
Biostatistics Tabulation of data
- 1. Tabulation of Data Dr. Aswartha Harinatha Reddy Department of Life Sciences
- 2. Tabulation: The process of placing classified data into tabular form is known as tabulation. A table is a symmetric arrangement of statistical data in rows and columns. Rows are horizontal arrangements whereas columns are vertical arrangements.
- 3. Tabular presentation is the process of condensation of the data for convenience in statistical processing, presentation and interpretation of the information.
- 4. Objectives and importance of Data Tabulation To carry out investigations To do comparisons To locate omissions and errors in the data To use space economically To study the trends To simplify data Interpretation (Arrangement of data in meaningful form)
- 5. Parts of an Ideal Table Table number Title Date Row designations Column headings Or Captions Body of the table Source Footnotes
- 6. Methods of Tabulation Simple tabulation: Simple tabulation also known as one-way table. Simple tabulation is when the data are tabulated to one characteristic. (Tabulated data contain only one character). For example: the survey that determined the number of employees of a company using different brands of mobile phones like Blackberry, Nokia, I phone, etc.
- 7. Brands of mobile phones Number of employees Blackberry 50 Nokia 70 I phone 90 Total 210 Table1: Simple tabulation
- 8. Double tabulation: Double tabulation also known as two-way table. Double tabulation is when two characteristics of data are tabulated. For example: number of male and female employees in the company using different brand of mobile phones like Blackberry, Nokia, Iphone, etc.
- 9. Number of employees Numbers of User Total Girls Boys Blackberry 20 30 50 Nokia 30 40 70 I phone 35 55 90 Total 85 125 210 Table 2: Double tabulation
- 10. Complex tabulation: Complex tabulation of data that includes more than two characteristics. For example: number of male (Age 22-24 and 24-32), female (Age 22-24 and 24-32), in the company using different brand of mobile phones like Blackberry, Nokia, Iphone, etc.
- 11. Mobiles Numbers of User Total (1)+(2) Girls Boys 22-24 age 24-32 age Total (1) 22-24 age 24-32 age Total (2) Blackberry 15 20 35 20 30 50 85 Nokia, 35 30 65 45 40 85 150 I phone, 25 35 60 35 55 90 150 Total 75 85 160 100 125 225 385 Table 3: Complex tabulation:
- 12. Thank you…………