Average can mean the mean the median and the mode it can refer to a geometric mean and weighted averages. Other types of averages in statistics are the mean and median. In 6 3 9 6 6 5 9 3 the Mode is 6 it occurs most often.
The number in the middle or the average of the two middle numbers is the median.
Mean can also be called as average or arithmetic mean. I am a math teacher at a high class institute down in England. Together with range they help describe the data. Mean 5 So the mean of the data set 4 5 6 3 and 7 is 5.