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    TRENDS AND ANOMALIES IN DATA

                      After the data is organised, patterns, trends and unusual results can be identified.
                      This makes the meaning of the data clearer and shows what it represents.

                      A trend is the general direction in which data moves over a period of time. It may
                      rise, fall or remain steady. It highlights the overall changes.

                      An anomaly is a result in the data that is unusual or does not match the normal
                      pattern. It stands out because it behaves differently from the rest of the data.

                      For example, the given survey shows, students’                   Ants build efficient networks to

                      Internet services preferences.                                     find food and communicate,
                                                                                        similarly data processing in a

                               Internet Service       Number of Students               network is designed to improve
                                                                                                  efficiency.
                              Email                                5
                              Chat                                 8

                              Social Media                        12

                              Games                                7

                              Videos                              10                    80%  of data comes from
                                                                                        unstructured sources, including
                              Education                            0                    trends and anomalies.

                      Here, the trend shows that a large number of  students use social media the most.
                      The anomaly is that none of them use Internet services for educational purposes.

                                                                 ACTIVITY-5

                         Make a table in Word showing the number of books borrowed from the library

                         each week for 5 weeks: 5, 7, 9, 20, 10.

                         Study the table and answer the following questions:

                         (a)  What is the trend?

                         (b)  What is the anomaly?

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