How to find the mean is by the sum(adding) of a set of values divided by the number of values in the set.
eg. 1+2+3=6/3 eg. 4,5,8,9,9
3 sets of values
=7<- this is the mean. a.k.a average
Try this mean, median, mode
B) 300,250,300,300,400 pg.431-433 #2-16
-Here is a video about mean, median and mode. I hope it helps:)