Data Visualization Position Scales
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Questions and Answers

How many position scales are typically required to uniquely specify a point in a 2D visualization?

  • 1
  • 3
  • The number of scales can vary depending on the visualization
  • 2 (correct)

    • What is the purpose of using different locations for data points in data visualization?

  • To avoid overlapping of data points
  • To make the visualization more aesthetically pleasing
  • To encode additional information about the data (correct)
  • To simplify the layout of the visualization

    • What is the most widely used coordinate system for 2D data visualization?

  • Cylindrical coordinate system
  • Polar coordinate system
  • Spherical coordinate system
  • Cartesian coordinate system (correct)

    • Which of the following statements about the Cartesian coordinate system is NOT true?

    <p>The axes must always run horizontally and vertically</p> Signup and view all the answers

    What is the purpose of specifying the range of numbers each axis covers in a Cartesian coordinate system?

    <p>To place the data values at the appropriate locations in the plot</p> Signup and view all the answers

    How can the geometric arrangement of the position scales affect the interpretation of a data visualization?

    <p>It can change the perceived relationships between the variables</p> Signup and view all the answers

    What are the different types of proximity sensors mentioned in the text?

    <p>Inductive, Capacitive, Resistive, Magnetic</p> Signup and view all the answers

    What is the purpose of a servo motor in IoT applications?

    <p>Specific angular positioning</p> Signup and view all the answers

    Which component is responsible for determining the rotational position of the shaft in a servo motor?

    <p>Potentiometer</p> Signup and view all the answers

    What feature distinguishes stepper motors from other types of motors?

    <p>Discrete steps movement</p> Signup and view all the answers

    How is the movement achieved in a stepper motor?

    <p>By energizing each phase in sequence</p> Signup and view all the answers

    Which wire from the servo casing is used for sending control input signals?

    <p>Control input line wire</p> Signup and view all the answers

    Which graphical element can represent continuous data?

    <p>Position</p> Signup and view all the answers

    What type of data is represented by categories such as 'dog', 'cat', and 'fish'?

    <p>Qualitative categorical</p> Signup and view all the answers

    What term is used to describe variables holding qualitative data?

    <p>Factors</p> Signup and view all the answers

    Which graphical element is suitable for representing discrete data?

    <p>Shape</p> Signup and view all the answers

    Which graphical element is suitable for representing ordered categorical data, such as 'good', 'fair', and 'poor'?

    <p>Position</p> Signup and view all the answers

    Which type of data is time duration considered as?

    <p>Continuous numerical</p> Signup and view all the answers

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