The Sign Test

• Is appropriate when the study contains:


  -must be repeated measures.

  -need to look for a significant difference between the conditions of the IV not relationship and correlation.

  -Data must be nominal (discrete categories).
• Using the sign test

  1. state a hypotesis
  2. Record data and work out sign
  3. find and calculate S value
  4. Find N value
  5. use critical value table
• IMPORTANT


  The calculated value of S must be equal or less than the Critical value for a significant result.

  Difference between two groups or two sets of data can be caused by chance so no significant difference between them.