Interpreting the Results of Chi-Square

• What is the purpose of the Chi Square test?

  To test associations and differences
• What was the focus of the study involving children?

  To see if children knew their future gender
• How were the children categorized in the study?

  As 'did know' or 'did not know'
• What is a directional hypothesis?

  • A hypothesis predicting a specific direction of difference
  • Indicates expected outcomes in a study
• How many rows and columns are in the contingency table?

  2 rows and 2 columns
• How is the degrees of freedom (Df) calculated?

  By using (rows-1) x (columns-1)
• What is the calculated value of Chi square in the study?

  23.1
• What is the Df value for the study?

  1
• What is the critical value of Chi square at the 5% level for a one-tailed test?

  2.71
• What does it mean if the calculated value is greater than the critical value?

  Findings are significant at the 5% level
• What conclusion can be drawn from the study's findings?

  6 year olds can identify gender better
• What are the critical values of χ2 for a one-tailed test?

  • 0.10: 1.64
  • 0.05: 2.71
  • 0.025: 3.84
  • 0.01: 6.63
• What are the critical values of χ2 for a two-tailed test?

  • 0.20: 0.52
  • 0.10: 1.64
  • 0.05: 3.84
  • 0.02: 5.99
• What are the totals for the children who 'did know' and 'did not know'?

  • Did know: 34
  • Did not know: 36
• What are the totals for the 3 year olds and 6 year olds?

  • 3 year olds: 33
  • 6 year olds: 37