1 / 32

A TRAINING WORKSHOP ON STATISTICAL AND PRESENTATIONAL SYSTEM SOFTWARE (SPSS) 18.0 WINDOWS

A TRAINING WORKSHOP ON STATISTICAL AND PRESENTATIONAL SYSTEM SOFTWARE (SPSS) 18.0 WINDOWS. February, 2013 BY: Abdul- Rauf. Introduction. Mathematics is the language of science, data analysis is the language of research As long as there is research, there will be the need to analyze data

earl
Download Presentation

A TRAINING WORKSHOP ON STATISTICAL AND PRESENTATIONAL SYSTEM SOFTWARE (SPSS) 18.0 WINDOWS

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. A TRAINING WORKSHOP ON STATISTICAL AND PRESENTATIONAL SYSTEM SOFTWARE (SPSS) 18.0 WINDOWS February, 2013 BY: Abdul-Rauf

  2. Introduction • Mathematics is the language of science, data analysis is the language of research • As long as there is research, there will be the need to analyze data • SPSS - Statistical and Presentational System Software • SPSS 17 and 18 are called PASW (Predictive Analytics SoftWare) • What is SPSS? • A software package use for conducting statistical analysis, manipulating data, and generating tables and graphs. SeTRAC

  3. Getting to know SPSS • Option 1: • Place your cursor on the SPSS icon and double click • Option 2: • Step 1: Click on Start • Step 2: Move cursor to All Programmes • Step 3: Click on SPSS executable file to open • Step 4: Click on the option under ‘What would you like to do’? • E.g Open existing data source • Step 5: Click OK button SeTRAC

  4. SeTRAC

  5. Features of SPSS • The main window features include: • Data Editor • Data view and Variable view • The Viewer • The Pivot Table Editor • Chart Editor SeTRAC

  6. Entering data • Step 1: Click on Data View • Step 2: Click on the first cell (1st C, 1st R) • Step 3: Type in the # e.g. if the variable is ID, then type in 1 • Step 4: Move the cursor into the second cell and enter second piece of information for case # 1 • Step 5: Move the cursor into next cell and enter very piece of information for case # 1 • Step 6: Press the Home key to get back. Use the down arrow to move to the second row and enter data for case #2 SeTRAC

  7. Modifying the data file • To delete a case • To insert a case between existing cases • To delete a variable • To insert a variable between existing variables • To move an existing variable • To sort the data file • To split the data file • To select cases SeTRAC

  8. To insert a variable between existing variables • Step 1: Position your cursor in a cell in the column (variable) to the right of where you would like the new variable to appear • Step 2: Right click • Step 3: Insert variable • Step 4: Enter the data of the new variable SeTRAC

  9. To move an existing variable • Step 1: Create a new empty variable column • Step 2: Click on the variable name of the existing variable you wish to move • Step 3: Click on the Edit menu and choose Cut • Step 4: Highlight the new empty column that you created • Step 5: Click on the Edit menu and choose Paste SeTRAC

  10. Screening and cleaning the data • Data screening process involves a # of steps: • Step 1: Checking for errors • Step 2: Finding the error in the data file • Step 3: Correcting the error in the data file SeTRAC

  11. Checking for errors • Inspect the frequencies for Categorical variables • Click on Analyze • Click on Descriptive Statistics • Click Frequencies • Choose the variable you wish to check (e.g. sex) • Move these into the Variables box • Click on Continue • Click on OK SeTRAC

  12. Checking for errors cont. • Inspect the frequencies for Continuous variables • Click on Analyze • Click on Descriptive Statistics • Click Descriptives • Choose the variable you wish to check (e.g. age) • Move these into the Variables box • Click on Continue • Click on OK SeTRAC

  13. Checking for errors cont. • Step 1: Check your minimum, maximum and means values • Step 2: Check the number of valid and missing cases • Step 3: Check the frequencies fall into each category eg district, community, etc • Step 4: Delete on your keypad SeTRAC

  14. Finding the error in the data file • METHOD 1 • Step 1: Click on the variable name of the variable in which the error has occurred (e.g. a 3 for sex) • Step 2: Click once to highlight the column • Step 3: Click on Edit from the menu across the top of the screen • Step 4: click on Find • Step 5: In the Search for box, type in the incorrect value that you are looking for (e.g 3) • Step 6: Click on Search Forward to continue SeTRAC

  15. Finding the error in the data file • METHOD 2 • Step 1: Click on Analyze, Descriptive Stat. Explore • Step 2: In the Display section click on Statistics • Step 3: Click on e.g. sex and move to Dependent list • Step 4: In the Label cases, choose ID • Step 5: In the Statistics section choose Outliers • Step 6: Click on Continue • Step 7: In the Options section choose Exclude case pairwise • Step 8: Click on Continue and then OK SeTRAC

  16. Correcting the error in the data file • Step 1: Check what value should have been entered for that person • Step 2: Find the variable labelled ID • Step 3: Move down to the case that has the ID # with the error • Step 4: Move across the row until you come to the column of the variable with the error • Step 5: Place the cursor in the cell, type in the correct value SeTRAC

  17. Obtaining frequency for categorical variable • Step 1: Click on Analyze, Descriptive Statistics, Frequency • Step 2: Choose and highlight the categorical variables you are interested in • Step 3: Move these into the Variables box • Step 4: Click on the Statistics button • Step 5: In the Dispersion section tick Minimum and Maximum • Step 6: Click on Continue and OK SeTRAC

  18. Obtaining descr. stat. for continuous variable • Step 1: Click on Analyze, Descriptive Statistics, Descriptives • Step 2: Click on all the continuous variables that you wish to obtain descriptive statistics for • Step 3: Click on the arrow button to move them into the Variables box • Step 4: Click on the Options button • Step 5: Click on mean, standard deviation, minumum, maximum, skewness, kurtosis • Step 6: Click on Continue, and OK SeTRAC

  19. Cross tabulation • Step 1: Click on Analyze, Descriptive Statistics, Cross tabs • Step 2: Click on (sex) • Step 3: Click on Row arrow button to move into Row(s) section • Step 4: Click on (agegp3) • Step 5: Click on Column arrow button to move into Column(s) • Step 6: Click on Cells SeTRAC

  20. Crosstab cont. • Step 7: Click on Expected, Total, Unstandardized • Step 8: Click on Continue • Step 9: Click on OK SeTRAC

  21. Creating graphs e.g. histogram • Step 1: Click on Graphs, Histogram • Step 2: Click on your continuous variable of interest (Total perceived stress) • Step 3: Move it into the Variable box • Step 4: Click on Display normal curve • Step 5: Click on Title to type the desired title • Step 6: Click on Continue and OK SeTRAC

  22. SeTRAC

  23. Bar graph • Step 1: Click on Graph, Bar • Step 2: Click on Clustered • Step 3: In the Data in chart are section, click on Summaries for groups of cases • Step 4: Click on Define • Step 5: In the Bars represent box click on Other statistics/summary function • Step 6: Click on the continuous variable (Total perceived stress) • Step 7: Click on categorical variable (agegp3) SeTRAC

  24. Bar graph cont. • Step 8: Click on the arrow button to move it into the Category axis box • Step 9: Click on another categorical variable (sex) • Step 10: Move it into the Define Clusters by box • Step 11: Click on the Options button • Step 12: Remove tick if any from Display groups defined by missing values • Step 13: Click on OK SeTRAC

  25. SeTRAC

  26. Creating a scatterplot • Step 1: Click on Graphs, Scatter • Step 2: Click on Simple, Define • Step 3: Click on your dependent variable (Total perceived stress) • Step 4: Click on the arrow to move it into the box labelled Y axis • Step 5: Move your other variable into the box labelled X axis • Step 6: Move categorical variables into the Set Markers by box • Step 7: Click on Title, Continue and then OK SeTRAC

  27. SeTRAC

  28. Editing a chart/graph • Step 1: Double click on what you wish to change • Step 2: Click on the title or label you wish to change • Step 3: Click once on the aspect of the chart/graph that you wish to change • Step 4: Click on the button on the menu bar that corresponds to the aspect you wish to change SeTRAC

  29. Non-parametric techniques • There are many techniques of non-parametrics • Chi-square for independence • Mann-Whitney Test • Wilcoxon Signed Rank Test • Kruskal-Wallis Test • Friedman Test • Spearman Rank Order Correlation SeTRAC

  30. Procedure for Spearman’ Rank Order Cor. • Step 1: Click on Analyze, Correlate, Bivariate • Step 2: Click on your two variables (total PCOISS, total perceived stress) • Step 3: Move them into the box marked Variables • Step 4: In the section labelled Correlation Coefficients • Step 5: Click on the option labelled Spearman • Step 6: Click on OK SeTRAC

  31. SeTRAC

  32. THE END THANK YOU FOR YOUR ATTENTION SeTRAC

More Related