Ten participants in a treatment group were asked to rate their feelings of confidence on a scale of one to ten, with a value of ten indicating very confident. The data for the participants are below:...

Ten participants in a treatment group were asked to rate their feelings of confidence on a scale of one to ten, with a value of ten indicating very confident. The data for the participants are below:


3, 4, 5, 5, 7, 7, 7, 8, 8, 10


What is the mean for these data?

 6 6.4 7 7.5 7.8