Question

¤Nominal ¤Is THIS different than THAT? ¤Ordinal ¤Is THIS bigger than THAT? ¤Interval ¤What are the QUANTITATIVE differences? ¤Ratio ¤How many time bigger is THIS from THAT? Provide three health care-focused examples of each type of variable: Nominal, Ordinal, Interval, Ratio.

Answer 1

These are the scales used for statistical measurements,. They are used to categorize the variables.

These are of four types:-

1. Nominal - these are used to represent a variable which is non -numerical , they are just the headings or names. Three health focused examples are:-

Gender -male ,female

Hair colour-black,brown, grey etc

Blood group-A,B,Ab,O

2.Ordinal - It uses ranking for representing the variables . It is used typically for non numerical concepts. Three health focused examples are:-

How do you feel today- ok,good ,better, very good

Linker scale -strongly disagree,disagree,neutral,agree,strongly agree.

Severity of pain -mild,moderate, severe

3.Interval - It is the scale which not only tells about the order but also the difference between the variables,but does not provide a true zero value.Three health focused examples are:-

Temperature in Fahrenheit or Celsius

IQ of a patient

Time

4. Ratio- this is the ultimate scale which provides order,interval between value of variable,and ratio . It is able to provide a true zero . Three health focused examples are:-

Height

Weight

Age .