Page 294 - Data Science class 11
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ViVa Voce Questions








            1.  What is ethics in terms of data ecosystem?
          Ans.  The use of protective mechanisms and policies to discourage the mishandling and unethical use of data in an
              organization which deals with big data is known as ethics in data ecosystem.
            2.  What are the three major sources of insider threats to data for an organization?
          Ans.  The three major sources are:
              a. Negligent or inadvertent user   b. Criminal or malicious insider   c. User credential theft
            3.  What are the three major sources of outsider threats to data for an organization?
          Ans.  The three major outsider threats are:
               a. Hackers                       b. Foreign governments            c. Cybercriminals
            4. What is Data Governance?
          Ans.  It is  the process  or procedure that organisations uses  to manage, utilise  and protect their data.  The data
              governance framework is a collection of practices and process that ensure the authorised management of data
              in an organisation.
            5.  What is a data story?
          Ans.  It is a combination of data, visuals and compelling narrative based on complex data and analytics.

            6.  What is trial assessment?
          Ans. It is a set of steps executed to support, reject or confirm an assumption.
            7.  What is correlation?
          Ans.  It is a statistical term describing the degree to which two variables move in coordination with one-another. It is a
              measure of the extent to which two variables are related.
            8.  What is causation?
          Ans.  Causation indicated a relationship between two events where one event is affected by the other.
            9.  What is perception of time assessment?
          Ans.  The perception of time assessment highlights a person’s subjective experience of time duration within an ongoing
              event.
           10.  What are the two main forecasting approaches?
          Ans.  The two main forecasting approaches are:
              a. Qualitative                    b. Quantitative
           11.  What are the two amin types of Analytic studies?
          Ans.  The two main types of analytic studies are:
              a. Experimental studies           b. Observational studies
           12.  What are the examples of secondary data?
          Ans.  The sources of secondary data are:
              a. Online data                    b. Social media
           13.  Name the top six data collection methods.
          Ans.  a. Observations                 b. Questionnaires and surveys          c. Interviews
              d. Documents and records          e. Focus groups                        f. Personal narratives
           14.  What is population?
          Ans.  Any group of data which includes all the data that is considered for analysis is known as population.
           15.  Name the three measures of central tendency and explain.
          Ans.  The three measures of central tendency are:
               a.  Mean—the mean is equal to the sum of all the values in the data set divided by the number of values in that
                 data set.
               b. Median—It is the middle value is a data in a data set that has been arranged in order of magnitude.
               c. Mode—the mode is the most frequently occurring value in a data set.
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