LECTURE 1

Question 1

Target population

Answer 1

target population refers to all the members of a population who meet a particular criterion for a research investigation

Question 2

What is an Element?

Answer 2

An element is a single entity of a given population which is not further decomposable

Question 3

What is a sample?

Answer 3

A sample is a group selected from a polation for investigation purposes.
Participants are members of a sample

Question 4

What are Systematic Errors?

Answer 4

Systematic errors is the incorrect or false representation of a sample.It is the over representation of one characteristics and the under represenatation of others.

A sample i

Question 5

Sampling Bias

Answer 5

Sampling bias is said to occur when the selected sample does not truly reflect the characteristics of the population.

Question 6

Features of probability sampling

Random / Representative Sampling

Answer 6

• the population needs to be precisely defined or have a finite number of elements.
• it cannot be used for a poulation that is too general a category
• every member of the population has a known non-zero probabilty of being selected.

Question 7

Merits of probabilty sampling

Answer 7

• inferences drawn from sample are generalisable to the population
• ## it reduces the chances of systematic errors

Question 7

Demerits of probability sampling

Answer 7

• it is time consuming
• it requires alot of effort
• it is expensive to carry out

Question 7

Merits of non-probability sampling

Answer 7

• it is not costly
• it takes less time to finish up
• it requires less effort