COMM 300: SPSS

From BluWiki

Commands

Refer to SPSS handout for more details about commands

Cross tabulations

• Analyze > Descriptive Statistics > Crosstabs
  • Use this screen to find if there is an association between one variable (in box one) and another variable (in box two)
  • Layers: You can add other variables of interest. If you add variables, it will give you completly seperate analysis
    • If the chi-squares are the same... distribution is the same regarless of the layer variable

Calculating a Chi-square test

• Analyze > Descriptive Statistics > Crosstabs
  • On crosstabs: click Statistics
    • In statistics: select Chi square test, Expected, Rows, and Columns
• Chi square statistic is to the right of Pearson Chi-Square under "Value"
• P-Value is found under the row Pearson Chi-Square & column "Asymp. Sig. (2-sided)

Interpreting this data

• If the significance level is below .05 (In pearson Chi-square), there is an association between the two levels. (Observations will be very near to expectations).
• You also want to compare the actual count and the expected count