I have 10 people working together. They work in groups for 6 days: Three days in week 1, three days in week 2. In each day I don't have the full set of people, but a subset of them. In each day I measure the individual performances.
I have to say if the general performance was higher in week 1 or 2.
So I was planning to do a t-test on two groups like this, for instance:
Group 1 – Week 1 Performances
Day 1: Paul, Mary, John Day 2: Paul, Sara Day 3: Jessica, Sara
Group 2 – Week 2 Performances
Day 4: Paul, Rita Day 5: John, Paul, Sara Day 6: Jessica, Rita
- Can I consider the two groups as independent and do an independent t-test?
- Could you suggest me the best way to say if general performance was better in week 1 or 2?
My concern is about the different people in each day and the different sizes of workgroups for each day. I'm also concerned because I have the same people in different days and in both groups. So it looks like the samples are overlapping.