Sign Test Flashcards
(16 cards)
What is the main focus of the sign test?
To determine the difference predicted between two sets of data
The sign test is a non-parametric test used to compare two related samples.
What design is used in the sign test?
Repeated measures design
This design involves measuring the same subjects multiple times.
In the sign test, what does the observed value represent?
The S value
The S value is derived from the calculated outcomes in the study.
What must the observed value (OV or S) be in relation to the critical value for significance?
Equal to or less than the critical value
If this condition is met, the null hypothesis can be rejected.
What happens if the observed value exceeds the critical value in the sign test?
The null hypothesis is not rejected
This indicates that the results are not statistically significant.
Fill in the blank: The observed value in the sign test is referred to as the _______.
S value
The S value is central to evaluating the test’s outcomes.
True or False: The critical value is determined before conducting the sign test.
True
The critical value is established based on the significance level and sample size.
What is the formula to calculate the observed value?
Add up the number of times the less frequent sign occurs (s)
This is used in statistical analysis to determine significance.
How do you calculate the difference in scores?
Before score - after score (a - b)
This calculation is fundamental in assessing the impact of an intervention or treatment.
What should you use to obtain the critical value?
Critical value table
This table shows the maximum value of s that is significant at a given level of probability.
What does N represent in this context?
N is the number of scores
Knowing N is essential for statistical calculations and determining sample size.
What is required for results to be significant?
Calculated S must be equal to or less than the critical value for the significance level shown
This ensures that the results are statistically meaningful.
What type of hypothesis can be used in this analysis?
1 or 2 tailed hypothesis
The choice affects how the analysis is interpreted and the significance levels.
What should be done if scores are the same?
Scores that are the same are not included
This helps in focusing on the variability of the data.
What type of analysis is being discussed?
Statistical analysis
It involves calculating significance and interpreting data variability.
Fill in the blank: To calculate the observed value, add up the number of times the less frequent sign occurs (____).
s
This is critical for determining the significance of the results.
