DATABASE FUNDAMENTALS
TYPES OF DATA
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Numerical
|
|
|
Categorical
|
|
|
Either A or B
|
|
|
None of the above
|
Detailed explanation-1: -A survey asks “On which continent were you born?” This is a categorical variable because the different continents represent categories without a meaningful order of magnitudes.
Detailed explanation-2: -Examples of categorical variables are race, sex, age group, and educational level. While the latter two variables may also be considered in a numerical manner by using exact values for age and highest grade completed, it is often more informative to categorize such variables into a relatively small number of groups.
Detailed explanation-3: -Categorical data examples include personal biodata information-full name, gender, phone number, etc. Numerical data examples include CGPA calculator, interval sale, etc.
Detailed explanation-4: -There are two main types of categorical data: nominal data and ordinal data.