What is Measurement Scales and How to choose Measurement Scales
Channel: Research Mentor
Date: 2022-04-26

In statistical analysis Measurement scales or level of measurement  are used to define and categorise the variables or numbers. There are four types of Measurement scales namely 
Nominal Scale, Ordinal Scale, Interval Scale, Ratio scale. these four are fundamental  scale and used to capture data using surveys and questionnaire. All survey question scales or rating scales , including Likert, Semantic Differential, Dichotomous, and others, are derived from these four basic levels of variable measurement scale since each scale is an incremental level of measurement, which means it performs the same job as the scale before it. 
Nominal scale is categorical scale and used for labelling the variable into different categories Nominal scale doesn't involve quantification of data means one cannot perform mathematical operation on nominal scale data. 
Ordinal scale is variable measurement scale it depicts the order of variable not the difference between variables like to measure stress, happiness we use ordinal scale.
Interval  scale is numerical scale where order as well as difference between variably can be measured . interval scale can be use for statistical analysis like we can calculate mean,mode, median using interval scale. one drawback of interval scale is there is no definite starting point. we can use interval scale to measure family income.
Ratio scale is a numerical scale we can carry out all mathematical operation on ratio scale data . it has definite starting point. 

Do watch my video on rating Scales by clicking on the link given below
https://www.youtube.com/watch?v=7qUiVgHmPjA&list=PLmUovtIB2-K97gGwb__clnJ0K8mDpNJm8&index=5
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