Drawing out the winning ticket number in a lottery is an example of:
Random Sampling
Stratified Sampling
Systematic Sampling
Choosing every $5$5th person on the class roll to take part in a survey is an example of:
Choosing $10%$10% of the students in each year for Years 7-12 is an example of:
Out of $2160$2160 students in a school, $216$216 were chosen at random and asked their favourite colour out of red, blue and yellow with $99$99 choosing red, $63$63 blue and $54$54 yellow.