sign test

• Just because we have found a difference in the mean, it does not represent a significance difference.
• The difference we found may be due to chance.
• Use the sign test to test this.
• Probability, also known as alpha, is determined by the sample size.
• P=0.505 is a significance value in psychology.
• P=value is a number which describes how likely the results are to occur.
• More stringent level of significance is 0.01.
• More lenient level of significance is 0.1.
• The sign test should not be used for correlation.
• To use the sign test, you must be looking at a difference and have used a repeated measures design (or matched pairs).
• The data must be converted into nominal data before using the sign test.
• In the sign test, the less frequent sign becomes the s-value.
• The n-value, which represents the number of participants not including any 0s, is used in the sign test.
• The n-value is used to select a row from the table of critical values.
• If a directional hypothesis is used in the sign test, it uses a one-tailed test with a significance level of 0.05.
• The critical value in the sign test is insignificant as the s-value is higher than the critical value.