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    C.  Write ‘T’ for true and ‘F’ for false.

                        1.  Data that is collected and organised can help in making decisions and
                            solving problems.
     A.  Tick ( ) the correct option.
                        2.  Sensors are found only in smartphones.
        1.  Identify the device that collects data by capturing light.
       a)  Thermometer     b)  Camera     3.  Machines with sensors work 24/7, collecting data without stopping.

       c)  Microphone     d)  GPS     4.  When people interact on social media, data doesn't  get collected.

        2.  Mark the type of data that is arranged in rows and columns.     5.  Data can be pictures, sounds and even locations on a map.
       a)  Unstructured data     b)  Structured data  D.  Answer in one word.

       c)  Image data     d)  Audio data     1.  Device inside an air conditioner that tells the machine exactly how
                            much cooling is needed.
        3.  Select the source of data that helps in finding locations using satellites.
                        2.  The action that arranges data in a particular order.
       a)  Thermometer     b)  Camera
                        3.  The term that refers to the trace left behind by actions taken online.
       c)  GPS     d)  Microphone     4.  Always recording same kind of information in the same way.

        4.  Choose the action that helps to organise the data in a particular order.     5.  Showing only the rows that match your condition and hiding

       a)  Filtering     b)  Sorting  everything else.

       c)  Grouping     d)  Counting  E.  Answer the following questions:

        5.  Which of the following is a characteristic of good data?     1.  Define a database.

       a)  Inaccurate     b)  Incomplete

       c)  Relevant     d)  Unfair
                        2.  What makes data good?
     B.  Fill in the blanks using the given hints:

     1.   is the raw collection of facts, figures, symbols or   Hints
     observations.  Unstructured
     Accurate           3.  What do you mean by sorting data?
        2.  A    detects things like heat, light, sound or   Database
     movement and turns them into data.
     Sensor
     3.   data comes in many different forms, such as   Data
     images, audio and text and is harder to organise.
        4.  A    is like a large, well-organised digital cupboard that stores data in      4.  Write some examples of database in daily life.

     electronic tables.
        5.  Good data must be   , meaning it shows the truth and is free from

     errors.

                                                                                          Good Data and Bad Data      35

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