# paired sample t-test

1. ### Do I have to conduct a normality test for only one paired sample?

I have to conduct an action research and I only have one participant. I intend to give the participant a pre-test (before intervention) and a post-test (after intervention). Since this is an action research, I intend to do at least two cycles. I want to know whether the intervention would make...
2. ### Lilliefors test for paired series + Bonferroni correction

Hi all, I got two series where I want to find out if they differ. The two series are paired meaning they are values for the same subjects. N = 21 After: 0.87348565, 0.88276705, 0.89083918, 0.89520159, 0.89519151, 0.90286579, 0.90586482, 0.90750014, 0.90978787, 0.91008748, 0.91230162...
3. ### Weighted paired-sample t-test?

We have school-level data for 200 schools, 100 of which participated in a PD (professional development) program. For each school, we have an average test score, as well as the corresponding standard deviation, variance, and count of records associated with that average score. I have come across...
4. ### Counterbalanced caffine within subject repeated experiment

Dear all, I was wondering if anyone could give me some pointers about how to analyze my thesis experiment. We had 12 participants, each performed something called "Random dot motion" cognitive tests with coffee and decaffinated coffee (randomly counterbalanced) on two separate days. This test...
5. ### Paired T-Test

I am trying to see if there is a strong correlation between two datasets, but I am not confident that the paired t-test could be used. The first dataset is a score from 1 to 6 and the second set is percent grade received from a score. I am trying to determine if those with a higher score tend to...
6. ### Dependent Samples T-test - different formulas?

I have a question regarding hypothesis testing when the samples are not independent. The formula I know for the test statistic for a paired samples t test is where you divide the mean difference by the standard error. I've come across another formula that instead subtracts the mean 'after'...
7. ### Paired Sample T-Test, Bivariate Correlation, Factors Influencing Resistance to Change

Hi there, My study investigates factors that influence resistance to change in an organisation. The independent variables are: trust, communication, age and participation. For the purpose of this study, the target population (N=25) answered self-administered questionnaires, using a...
8. ### SPSS: Mixed design ANOVA or paired sample t-test for both groups separately

------Dears TalkStats, Your help is highly appreciated! :) ------- I want to test wether the decrease in sleep quality of my sample is different for the two types of conditions. I did a paired sample t test while using split file (so seperately for condition 1 and condition 2) and i did a...