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Computational Thinking
                             Video Session

                       Scan the QR code or visit the following link to watch the video: Drawing Pie Charts

                       https://www.youtube.com/watch?v=1oShnkmA_ww
                       After watching the video, answer the following question:
                       What is the formula to calculate the angle of a slice in a pie chart?











                 Scatter Plots
                 A  scatter  plot  (also  called  a  scatterplot, scatter  graph, or  scatter  diagram) is  a  type  of  graph which  uses  Cartesian
                 coordinates to display values of mainly two variables in a dataset. It typically consists of an X-axis (the horizontal axis),
                 a Y-axis (the vertical axis), and a series of dots. Each dot on the scatterplot signifies one observation from a data set.
                 The position of the dot on the scatterplot represents its value on the X-axis and Y-axis respectively.

                 Scatter plots usually represent a large amount of data. Scatter plots are used to inspect the relationship between two
                 variables. These help to analyse how much one variable affects the second variable. This relationship between the two
                 variables is called correlation. Scatterplots are used with continuous data. We are generally not concerned about single
                 observations, but rather about the structure of the whole dataset.
                 For example, a scatter plot showing the relation between the number of years of education and income of an individual:


                                         Years of education         18    21    23     25    27

                                         Income (` in thousands)    25    80    150   540   920



                                      1000
                                     Income (Rupees) in thousands   700
                                       900
                                       800


                                       600
                                       500
                                       400
                                       300
                                       200
                                       100
                                         0
                                           0        5        10        15        20       25        30
                                                                 Years of Education


                 Note that to plot the points on the graph, you will show each one as an ordered pair (years, income.







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