Target Audiences

After a lecture on target audiences and taking a glance at a few adverts we have been able to, fairly basically, figure out the age, gender, social class etc of a target audience.
To give an example, the H&M advert we looked at (which unfortunately has now been deleted from youtube due to a copyright disclaim) was targeted at a female target audience with an age-range of 15 to 30 years old, due to it's artistic and 'cooky' style, the simplistic art of the advert shows that the target audience should have a higher level of education which indicates that the social class should be both lower middle and middle classes.