Key Science Skills

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Population

A group of people who are engaged within a certain study or experiment

Sample

A subset of a population selected for observation and analysis in research.

Sampling

process of choosing the sample of people from a population for a study.

Convience Sampling

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Random Sampling

a sampling method where each individual has an equal chance of being selected from the population.

Stratified Sampling

Involves dividing the population into groups based on characteristics

Allocation

of individuals to different groups in a study to ensure representation.

Controlled experiments

involve manipulating one variable while keeping others constant to determine cause-and-effect relationships.

Experimental research designs

are structured methods for investigating hypotheses by manipulating variables and controlling conditions.