Page 132 - Data Science class 11
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3.  Which of the following is an example of NO correlation?                           [CBSE Handbook]
              a.  The age of a child and his/her shoe size

              b.  The age of a child and his/her height
              c.  The age of a child and the number of pets owned

              d.  The age of a child and vocabulary of words learned
            4.  Which one of the below-mentioned scenarios does not appear most likely to be from causation?   [CBSE Handbook]
              a.  Reading one hour per day increases vocabulary
              b.  People who are homeless are more likely to have mental health issues

              c.  The weight of a person has nothing to do with the risk of heart disease
              d.  In India, as car sales increase, the birth rate also increases

            5.  A researcher uses an experimental design to study the effect of music on memory. In this experiment, the Independent
              Variable is:
              a.  music                                          b.  memory
              c.  both music and memory                          d.  neither music nor memory
            6.  Data from a correlational study is usually shown as a:

              a.  scatterplot                                    b.  pie chart
              c.  bar graph                                      d.  Either b or c

            7.  Research shows that the older a person is, the larger their vocabulary. This is an example of a:
              a.  positive correlation                           b.  negative correlation
              c.  causal correlation                             d.  partial correlation

        B.  State whether these statements are true or false.

            1.  Radish belongs to the Brassicaceae or mustard family.                                    __________
            2.  Perception of time assessment is the ability to detect, process and respond to a stimulus.    __________
            3.  One needs to perform a trial assessment to understand what is meant by the cause and effect relationship.  __________
            4.  Causation cannot occur without correlation.                                              __________
            5.  Lack of preparation is one of the leading causes for project delays and budget overruns.    __________


             Standard Questions (Section B)

        A.  Short answer type questions:

            1.  An example of causation could be when a person plays a lot in a casino, and as a consequence loses all his/her money.
              Explain what is the cause and effect here.
            2.  What is the role of causation in a trial assessment?

            3.  Explain the concept of agent causation.
            4.  What do you understand by zero correlation?
            5.  Write a short note on data quality assessment.
        B.  Long answer type questions:

            1.  Write down three facts and justify why you think they are facts.                  [CBSE Handbook]
            2.  What is causation? (Support your answer with two examples of causation.)          [CBSE Handbook]


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