18 Questions
How many position scales are typically required to uniquely specify a point in a 2D visualization?
2
What is the purpose of using different locations for data points in data visualization?
To encode additional information about the data
What is the most widely used coordinate system for 2D data visualization?
Cartesian coordinate system
Which of the following statements about the Cartesian coordinate system is NOT true?
The axes must always run horizontally and vertically
What is the purpose of specifying the range of numbers each axis covers in a Cartesian coordinate system?
To place the data values at the appropriate locations in the plot
How can the geometric arrangement of the position scales affect the interpretation of a data visualization?
It can change the perceived relationships between the variables
What are the different types of proximity sensors mentioned in the text?
Inductive, Capacitive, Resistive, Magnetic
What is the purpose of a servo motor in IoT applications?
Specific angular positioning
Which component is responsible for determining the rotational position of the shaft in a servo motor?
Potentiometer
What feature distinguishes stepper motors from other types of motors?
Discrete steps movement
How is the movement achieved in a stepper motor?
By energizing each phase in sequence
Which wire from the servo casing is used for sending control input signals?
Control input line wire
Which graphical element can represent continuous data?
Position
What type of data is represented by categories such as 'dog', 'cat', and 'fish'?
Qualitative categorical
What term is used to describe variables holding qualitative data?
Factors
Which graphical element is suitable for representing discrete data?
Shape
Which graphical element is suitable for representing ordered categorical data, such as 'good', 'fair', and 'poor'?
Position
Which type of data is time duration considered as?
Continuous numerical
Explore the concept of position scales in data visualization, where two numbers are needed to specify a point in a 2D plot. Learn about the conventional arrangement of x and y axes, and how they determine the geometric arrangement of data points.
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