sign test

• the sign test - a calculation that is used to determine whether a difference is statistically significant or if it occurred by chance
• when to use the sign test:

  • when looking for a difference rather than a relationship
  • experiment used repeated measures
  • data should be nominal (in categories)
• s value - the smaller number becomes the 'S value'
• n value - number of participants that had a change in score (ignore any 0 values)
• critical value - the value that is used to determine whether the null hypothesis is rejected
• for data to be significant, the 'S value' must be equal to or less than the critical value identified