Brainlies how can you tell if a data set is symmetrical or asymmetrical? how can you tell if it has outliers? how do you use a two-way frequency table to find possible associations and trends in data?

You can tell if a data set is symmetrical if when you plot the points on the graph, you can draw a line down the center, and is is the same on either side if the line. If it's asymmetrical, there is no central line. 

Symmetrical is my first attachment, asymmetrical is the second :)