State whether the following statements are true or false:
Statistics refers to collection of data on the population of a state or country.
A sample is the entire group being considered in a statistical analysis.
A population is a selection of some of the sample.
In a sample survey, information is obtained from the entire population.
A census of population is conducted to collect information important for future planning.
The Australian Bureau of Statistics conducts a census once every ten years.
While collecting statistical data, issues of privacy and ethics must be considered.
State whether the following is an instance of a sample or a census:
A random selection of some people at a mall.
A stocktake of all the goods in store.
A crash test of new cars just manufactured by a factory.
Asking all the teachers at your school whether they approve of a new class timetable.
An election to decide the premier of Queensland.
Asking a random selection of students in your class whether they approve of the teacher.
A taste test of a large batch of cookies you have just baked.
A body scan of randomly selected passengers at Melbourne International Airport.
State whether a sample or a census would be more suitable for determining the following:
The number of ambulances in Australia.
The number of people watching Stranger Things.
The average number of letters in the surnames of teachers at your school.
The number of smokers in South Australia.
The average commuting time of teachers at your school.
The average height of men in Spain.
The number of traffic lights in the suburb you live in.
The most popular candidate in an election.
For each of the following samples, give an example of a population that the sample could have been chosen from:
A sample containing 50 people who drive white cars.
A sample of 50 people drawn from a population. In this sample, the youngest is 18 years old, and the oldest is 64.
A sample containing the first 50 people to enter a train station on a given day.
For each of the following populations, give an example of a possible group of people that could make up a sample of the population.
The population is:
All the students that attend the local high school.
All people aged under 18, who live in Sydney.
All people in a city who play in any organised sporting competition.
All people who own a pet dog.