1 Exampromax - Stuvia US
Edexcel AS Level Maths Statistics Questions
and Answers 100% Correct Answers Already
Graded A+
Q: Population
Ans: The whole set of items that are of interest
Q: Census
Ans: Observes or measures every member of a population
Exampromax - Stuvia US
Q: Advantages of a census
Ans: It should give a completely accurate result
Q: Disadvantage of a census
Ans: Time consuming and expensive
Hard to process large quantity of data
Q: Sample
Ans: A selection of observations taken from a subset of the population which is
used to find out information about the population as a whole
Q: Advantages of a sample
Ans: Less time consuming
Fewer people have to respond
Less data than a census
Q: Disadvantage of a sample
Ans: The data may not be as accurate
The data may not be large enough toggle information about the population
Q: Sampling Units
, 2 Exampromax - Stuvia US
Ans: Individual units of a population
Q: Sampling Frame
Ans: A list of individually named or numbered sampling units
Q: Simple Random Sample
Ans: A sample where every sampling unit has an equal chance of being chosen
Q: Advantages of Simple Random Sample
Ans: Free of bias
Easy and cheap to implement
Each sampling unit has equal chance of selection
Exampromax - Stuvia US
Q: Disadvantage of Simple Random Sample
Ans: A sampling frame is needed
Not suitable when the population size is very big
Q: Systematic Sampling
Ans: A method of sampling where the required elements are chosen at regular
intervals from an ordered list
Q: Advantages of Systematic Sampling
Ans: Simple and quick to use
Suitable for large samples
Q: Disadvantages of Systematic Sampling
Ans: A sampling frame is needed
It can introduce bias if sampling frame is not random
Q: Disadvantages of Stratified Sampling
Ans: Sample accuracy reflects the population structure
guarantees proportional representation of groups within a population
Q: Advantages of Stratified Sampling
Edexcel AS Level Maths Statistics Questions
and Answers 100% Correct Answers Already
Graded A+
Q: Population
Ans: The whole set of items that are of interest
Q: Census
Ans: Observes or measures every member of a population
Exampromax - Stuvia US
Q: Advantages of a census
Ans: It should give a completely accurate result
Q: Disadvantage of a census
Ans: Time consuming and expensive
Hard to process large quantity of data
Q: Sample
Ans: A selection of observations taken from a subset of the population which is
used to find out information about the population as a whole
Q: Advantages of a sample
Ans: Less time consuming
Fewer people have to respond
Less data than a census
Q: Disadvantage of a sample
Ans: The data may not be as accurate
The data may not be large enough toggle information about the population
Q: Sampling Units
, 2 Exampromax - Stuvia US
Ans: Individual units of a population
Q: Sampling Frame
Ans: A list of individually named or numbered sampling units
Q: Simple Random Sample
Ans: A sample where every sampling unit has an equal chance of being chosen
Q: Advantages of Simple Random Sample
Ans: Free of bias
Easy and cheap to implement
Each sampling unit has equal chance of selection
Exampromax - Stuvia US
Q: Disadvantage of Simple Random Sample
Ans: A sampling frame is needed
Not suitable when the population size is very big
Q: Systematic Sampling
Ans: A method of sampling where the required elements are chosen at regular
intervals from an ordered list
Q: Advantages of Systematic Sampling
Ans: Simple and quick to use
Suitable for large samples
Q: Disadvantages of Systematic Sampling
Ans: A sampling frame is needed
It can introduce bias if sampling frame is not random
Q: Disadvantages of Stratified Sampling
Ans: Sample accuracy reflects the population structure
guarantees proportional representation of groups within a population
Q: Advantages of Stratified Sampling
