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    After correction:

                         Student        Gadget        Screen          Sleep       Outdoor       Academic        Screen
                                         Type           Time         Hours         Activity       Score       Time Level

                        Student 1       Mobile          5 hrs           6          30 min           65           High

                        Student 2       Laptop          2 hrs           9            1 hr           80           Low

                        Student 3       Tablet          4 hrs           7          45 min           70           High

                        Student 4       Laptop         1.5 hrs          8           1.5 hr          85           Low
                        Student 5       Mobile          4 hrs           6            1 hr           —            High

                      Handling Missing Values
                      Academic Score for Student 5 is missing.

                      Available Academic Scores:

                      65, 80, 70, 85
                      Average = (65 + 80 + 70 + 85) ÷ 4Average = 300 ÷ 4Average = 75

                      Fill missing value:

                      Student 5 Academic Score = 75
                      After correction:

                         Student        Gadget        Screen          Sleep       Outdoor       Academic        Screen
                                         Type           Time         Hours         Activity       Score       Time Level

                        Student 1       Mobile          5 hrs           6          30 min           65           High

                        Student 2       Laptop          2 hrs           9            1 hr           80           Low

                        Student 3       Tablet          4 hrs           7          45 min           70           High

                        Student 4       Laptop         1.5 hrs          8           1.5 hr          85           Low

                        Student 5       Mobile          4 hrs           6            1 hr           75           High

                      2.  Data formatting: Data formatting involves organising data in a structured and consistent

                         format so that it can be easily analysed.
                         This includes:

                          Converting text into numerical values (if required)
                          Standardising units (e.g., minutes to hours)

                          Arranging data neatly in rows and columns

                          Ensuring consistent data format

                       18        Artificial Intelligence (CT & AI)-VIII

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