Is the sample representative of the population?

population: chocolate consumers
sample: surveys inside a company's chocolate bar wrappers that are completed and returned to the company

A.
representative

B.
not representative

Question

Is the sample representative of the population? 

population: chocolate consumers 
sample: surveys inside a company's chocolate bar wrappers that are completed and returned to the company
 
 A.
representative
 
 B.
not representative

anonymous · Answer

@MrNood can you help me

mrnood · Answer

does each member of the population have an equal chance of being included in the sample?

anonymous · Answer

yes

mrnood · Answer

so - out of ALL chocolate eaters

the sample only includes those who bought a specific type of bar AND chose themselves to fill out and return to the supplier

.....