FUNDAMENTALS OF COMPUTER

DATABASE FUNDAMENTALS

TYPES OF DATA

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Traffic crossing a bridge in an hour
A
Categorical:nominal
B
Categorical:ordinal
C
Quantitative:discrete
D
Quantitative:continuous
Explanation: 

Detailed explanation-1: -It depends how did you record the time, e.g. if you count days, or record hours rounded to the nearest hour then it is rather discrete; when you record days, hours and minutes of something happening, then it is closer to continuous.

Detailed explanation-2: -A discrete quantitative variable is one that can only take specific numeric values (rather than any value in an interval), but those numeric values have a clear quantitative interpretation. Examples of discrete quantitative variables are number of needle punctures, number of pregnancies and number of hospitalizations.

Detailed explanation-3: -Yes, speed is a common continuous variable, and the value is chosen by a random process. We know it is continuous because there is always another possible value between any two speed values.

Detailed explanation-4: -A continuous data set (the focus of our lesson) is a quantitative data set that can have values that are represented as values or fractions. Weight, height, temperature, etc. are examples of measurement that would make up a continuous data set.

There is 1 question to complete.