I will know I am successful when:
*I can analyze sampling techniques as valid or biased.

Is this sample biased or valid?
Is this sample biased or valid?
Is this sample biased or valid?
Is this sample biased or valid?
Is this sample biased or valid?
Is this sample biased or valid?
Is this sample biased or valid?
Is this sample biased or valid?
Is this sample biased or valid?
Is this sample biased or valid?