Statistics Vocab

Population

A collection for all objects or individuals of interest that have properties that someone wishes to record

Target Population

The entire group a researcher is interested in

Sample

Asking or surveying some of the population or group under consideration

Sample Frame

The tool used to gain access to the population

Random Selection

Characterising a process of selection in which each item has an equal probability of being chosen

Bias

An inaccuracy in data due to the characteristics of the process employed in the creation, collection, manipulation and presentation of data or a faulty sample deisgn

Population variable

A feature of an individual which can be measure. e.g height, age, weight,etc

Risk

Can be thought as a probability and can lead to inaccuracy. Does not mean a bad event that has unpleasant consequences

Poll

Recording a vote

Variable

A quatity or category that can be changed or take different values in an experiment

Estimate

Roughly calculate or judge the value, number, or quantity

Survey

AN investigation in the opinions or experiences of a group of people, based on a series of questions