Sign Test

• Step 1: Subtract IV 2 from IV 1 to get a sign of difference (if the number is positive, this is represented by a +, if the number is negative, this is represented by a -)
• Step 2: Add up the amount of pluses and minuses
• Step 3: The number of the less frequent sign is the S value (also known as the calculated value)

  • For example, 7 minuses and 5 pluses means the S value is 5
• Sign test is used for :

  1. Testing difference (experiments)
  2. Uses nominal data
  3. When the experimenter uses Repeated Measures design
• If there are any equals signs, ignore these

  • Take the amount of equals signs away from the number of participants, they are irrelevant