1. 1 STATISTICAL DATA ANALYSIS SOFTWARE By Johnson Lubega Kagugube Director, District Statistics and Capacity Development Uganda Bureau of Statistics

2. OUTLINE OF THE PRESENTATION Meaning of data analysis Purpose for data analysis Reason for statistical analysis Issues to consider in data analysis Statistical data analysis softwares Issues to consider when choosing a Statistical Package Conclusion

3. MEANING OF STATISTICAL DATA ANALYSIS Collection of methods used to process raw data and report the overall trends. Process of systematically applying statistical and/or logical techniques to describe and illustrate, condense and recap, and evaluate data.

4. REASON FOR STATISTICAL ANALYSIS Transform raw data into information The general purpose of statistical analysis is to provide meaning to what otherwise would be a collection of numbers and/or values. Provide a way of drawing inductive inferences from data and distinguishing the signal (the phenomenon of interest) from the noise (statistical fluctuations) present in the data Statistical analysis procedures are categorized according to the type of statistics generated; i.e descriptive, associative, and inferential.

5. REASON FOR STATISTICAL ANALYSIS- Cont.. 1. Descriptive statistics portray individuals or events in terms of some predefined characteristics, like measure of central tendency and dispersion –Mean, Median, Range, Standard Deviation, etc. 2. Associative or relative statistics seek to identify meaningful interrelationships between or among data. Such statistics include; univariate, bivariate and multivariate analysis. For instance, "Is there a relationship between salt intake and diastolic blood pressure among middle-age women?" is a problem definition suitable for analysis by associative statistics.

6. REASON FOR STATISTICAL ANALYSIS- Cont.. 3. Inferential statistics seek to assess the characteristics of a sample in order to make more general statements about the parent population, or about the relationship between different samples or populations. Measures of differences of the means and measures of statistical significance For Example; "Does a low sodium diet lower the diastolic blood pressure of middle-age women?" represents a problem definition suitable for inferential statistics.

7. ISSUES TO CONSIDER IN DATA ANALYSIS There are a number of issues to consider with respect to data analysis. These include: Having the necessary skills to analyze Following acceptable norms for data analysis and presentation Choosing the appropriate statistical software Providing honest and accurate analysis Manner of presenting data Extent of data analysis

8. A Statistical package is a computer programme that specializes in statistical data analysis.

9. WHAT STATISTICAL SOFTWARES CAN DO IN RELATION TO DATA ANALYSIS Input data into the computer Organise data Compare data Manage data Summarise data (transform raw data into information) Generate tables and graphs Facilitate presentation of information and preparation of analytical reports

10. SOME OF THE STATISTICAL PACKAGES BY SOURCE OPEN SOURCE PUBLIC DOMAIN FREEWAREPROPRIETARYADD-INS OpenEpiBrightStatBV4.1SASANALYSE-IT PSPPCSProGeoDASTATASIGMA XL REpi InfoWinBUGSSPSSSTATEL R CommanderX-12-ARIMAWINPEPIS-PLUSSUDAAN ShogunINSTATWINIDAMSMINITABTOTAL ACCESS Statistics PloticusZAITUN Time Series GENSTATSSC-STATA SimfitE-VIEWS Statistical LabSTATISTICA

11. MAJOR STATISTICAL DATA ANALYSIS PACKAGES In terms of the wide usageare; STATA SAS – Statistical Analysis System SPSS- Statistical Package for Social Sciences

12. MAJOR STATISTICAL DATA ANALYSIS PACKAGES –Cont.. Licensing policies STATASASSPSS COST In US Dollars 29560001599 DURATIONPurchase and own the version Annual INSTALLATIONMultiple installations allowed One license per CPU EXTRA COST No extra pay for separate modules No extra costExtra Modules like Survey data, and time series paid for

13. MAJOR STATISTICAL DATA ANALYSIS PACKAGES –Cont.. STATASASSPSS Installation and Updates SimpleComplicatedQuick and easy Availability of Technical support from developer All customers entitled to technical support Students buying Gradpack are not entitled to technical support Web Site http:/www.stata.com/http:/www.sas.comhttp://w.w.w.spss.com Add-on-programs Users permitted to create new commands that integrated in the system Macros are developed but cannot be integrated in the system Little space to accept new macros Other Issues

14. ISSUES TO CONSIDER WHEN CHOOSING A STATISTICAL PACKAGE Important to know more than one statistical software package Analyse your needs with respect to data management and analysis; and choose a package that addresses the needs Ease of importing and exporting data to other computer programmes Ease of transferring the output into word processing facilities Licensing facility-Purchase to own Vs hire General Vs Specialized purpose statistical software

15. UBOS’ EXPERIENCE UBOS is currently using STATA. Recently STATA Ver 10 and Statransfer Ver 8 were procured for UBOS, sector ministries and the Higher Local Governments Why STATA It is more sustainable Cost One time license Is it more useful? Handling data Graphics for exploration and reports Capacity for programming Latest version is Windows based to a great extent Technical capacity already available for the stakeholders in the NSS

16. CONCLUSION Statistical capacity building is necessary in terms of training and mentoring to; enable countries assist and also learn from each other enable all stakeholders involved in the respective countries NSS to acquire expertise to determine their statistical data analysis needs enable staff handling statistics in Africa to acquire knowledge to use statistical packages to process, and analyse data to support planning and monitoring of development programmes Choosing a statistical package to use requires analysis of the cost, data analysis needs and the licensing policy. The National Statistical Offices should establish collaborative arrangements with the Statistical Training Institutions to ensure that the graduates train in the selected statistical packages.

17. 17 E ND THANK YOU