Spss Basics4 22 09


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How to use SPSS

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Spss Basics4 22 09

  1. 1. SPSS Basics ELCF 5960 Guest lecturer: Prof. Haley Chicago State University Chicago, IL   April 23, 2009
  2. 2. Objectives <ul><li>Definition </li></ul><ul><li>Input data </li></ul><ul><li>Main menus and Toolbar </li></ul><ul><li>Variable View </li></ul><ul><ul><li>Variable types, names, values, label, and measurement </li></ul></ul><ul><li>Data View </li></ul><ul><li>Frequency table and histogram </li></ul>
  3. 3. Definition <ul><li>Statistics--a set of methods and rules for organizing, summarizing, and interpreting information </li></ul><ul><li>Data--measurements or observations </li></ul><ul><li>Population: the set of all individuals (or objects) of interest </li></ul><ul><li>Sample: a set of individuals (or objects) selected from a population </li></ul><ul><li>Variable: characteristic or condition that changes or has different values for different individuals </li></ul>
  4. 4. How to input data in SPSS <ul><li>Three ways to input data </li></ul><ul><li>Create a new data file </li></ul><ul><ul><li>File/New/Data </li></ul></ul><ul><li>Use an existing file – Recently used data, Recently used files </li></ul><ul><li>Import data from Excel </li></ul>
  5. 5. Main menus and Toolbar <ul><li>File – Recently used data, Recently used files </li></ul><ul><li>Edit – Insert Variable, Insert Data, Go to case </li></ul><ul><li>View – Grid lines, Value labels </li></ul><ul><li>Data – Define variable properties, Sort cases </li></ul><ul><li>Transform – Replace missing values </li></ul><ul><li>Analyze – the most essential menu with 21 options, Compare Means </li></ul><ul><li>Graphs - </li></ul><ul><li>Utilities - Variables </li></ul><ul><li>Add-ons – SPSS tutorial </li></ul><ul><li>Window and Help – F1/Contents or Index or Search/T test, Online help, Topics, Tutorial </li></ul>
  6. 6. Variable View 1 <ul><li>Variable Names – </li></ul><ul><ul><li>64 characters, </li></ul></ul><ul><ul><li>no space, </li></ul></ul><ul><ul><li>start with a letter </li></ul></ul><ul><ul><li>no symbols at the beginning, </li></ul></ul><ul><ul><li>not end with a period or underscore. </li></ul></ul><ul><ul><li>not case sensitive </li></ul></ul><ul><li>Variable Labels – up to 256 characters. </li></ul><ul><li>Value Labels </li></ul><ul><ul><li>120 characters </li></ul></ul><ul><ul><li>For discrete variables, such as 1 = male and 2 = female. </li></ul></ul>
  7. 7. Variable View 2 <ul><li>Type – date, numeric, string, scientific notation,currency,etc. </li></ul><ul><li>Width – defines the number of characters will allow. Default number = 8 </li></ul><ul><li>Decimals </li></ul><ul><li>Missing – missing data </li></ul><ul><li>Colums – </li></ul><ul><li>Measurement levels </li></ul>
  8. 8. Measurement Levels <ul><li>Scale – continuous variables, such as age in years, or SAT score </li></ul><ul><li>Ordinal – ranking variables in terms of size or magnitude. Does not reveal exact magnitude of differences, such as attitude scores representing degree of satisfaction or confidence and preference rating scores. </li></ul><ul><li>Nominal – No quantitative distinctions between observations, e.g., gender, blood type, hair color, and zip code. </li></ul>
  9. 9. Data View <ul><li>Enter data vertically within the defined values. For example, if 1 = male, 2 = female, you should not enter 3 in data view. </li></ul>
  10. 10. In Class Exercise <ul><li>Data (Scores of a quiz, n = 14) </li></ul><ul><li>5, 7, 3, 6, 4, 6, 4, 5, 3, 7, 5, 6, 5, 4 </li></ul>
  11. 11. Frequency <ul><li>Height of bar corresponds to frequency </li></ul><ul><li>width of each bar corresponds to interval width </li></ul>
  12. 12. Thank you! <ul><li>Question? </li></ul>