Page 306 - Data Science class 11
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Q. 13. What is meant by positive and negative correlation?

        Q. 14. What is a boxplot? Explain.
        Q. 15. What is a matrix? How is it different from a vector? Explain

        Q. 16. What is a survey? What type of questions are normally asked in a survey? Explain.

        Answer any 3 out of the given 5 questions in 50 – 80 words each.                        (4 × 3 = 12 marks)
        Q. 17. Why do Data Scientists need to understand ethics? Explain.

        Q. 18. Why should we go for observational study when there is Trial Assessment? Explain.
        Q. 19. Explain the operators of R language with the help of one example each.

        Q. 20. What is ggplot2? Explain. How to create a scatter plot using this package?
        Q. 21. Represent the following data table using XML.

                       Name                  University                    Course
               Rohan                 MIT                       Computing Mathematics
               Priya                 IIT                       Data Science
               Sharmila              IIM                       Finance
               Ashwini               Carnegie University       Biotechnology
               Lalith                UCLA                      Machine Learning




















































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