I have two questions regarding the significance and t-test of the chosen attributes and attribute levels:
- To get a general overview about the main results of my CBC study, I’ve done a counts analysis. It shows me that one of my five attributes is not significant. I am not quite sure how I have to interpret this for a CBC analysis. Do you have some advice for that issue?
- Also, I’ve run a HB analysis with my data. For the t-test, I’ve taken the following steps:
1. I took the average utilities and the average standard deviation for each attribute level (which is one output besides the individual utilities and importances)
2. Then, I calculated the square root of the sample size minus one (=SQRT(N-1)).
3. Next, I computed the standard error by taking the standard deviation of each attribute level divided by the square root (n-1)
4. Finally, I took the average utility for each attribute level and divided it by the standard error to get the t-value for each attribute level
First, my question is whether these steps are correct to figure out whether the attribute levels are significantly different from zero. If this is the correct way, I’ve found that one attribute level is not significant. Similar to my first issue, how can I interpret this finding?
It would be great to hear from you soon.