Page 317 - AI Ver 3.0 Class 11
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3.   Nominal variables are like labels or categories like car brands or seasons.
                     4.   Interval level data shares similarities with ordinal data as it maintains a clear order, but it differs in
                          that the differences between values can be measured.
                     5.   Mode represents the sum of all values in a dataset divided by the number of values.
                     6.   Data points with a low standard deviation are near to the mean.

                     7.   Matplotlib is non-customisable, giving users little control over the appearance of their plots.
                     8.   Scatterplot is referred to as horizontal bar chart.


                                                  SECTION B (Subjective Type Questions)
                 A.   Short answer type questions.
                     1.   Define testing data.
                     2.   What are the levels of measurement of ordinal data?
                     3.   What is a pie chart? Explain with example.
                     4.   Which command will you use to install Matplotlib library?

                     5.   Define matrix.
                 B.   Long answer type questions.
                     1.   Discuss different sources of secondary data.
                     2.   What is structured, semi-structured and unstructured data? Give examples.
                     3.   Explain the Data Transformation process.

                     4.   Explain any four applications of matrices in AI.
                     5.   List down any four differences between training data and testing data.

                 C.   Competency-based/Application-based questions:                       #Coding & Computational Thinking

                     1.   Computer science teacher in Gyan Vidya School invited students to try data visualisation for the following data. Can
                          you suggest a suitable method for visualising this data. Also give the Python code required for the same.
                                              Max. Temperature
                              Month
                                                   (°C)
                                Jan           19.50
                                Feb           23.00
                                Mar           27.95
                                Apr           34.97
                                May           37.66
                                Jun           36.26
                                Jul           32.90
                                Aug           31.77
                                Sep           31.73
                                Oct           30.92
                                Nov           27.33
                                Dec           22.77
                                Average       29.73
                     2.   Your teacher has asked you to compare the test scores of two classes to understand which class has more consistent
                          performance. Class A's test scores are [85, 90, 92, 88, 91], and Class B's test scores are [78, 82, 85, 79, 81]. Calculate
                          the variance and standard deviation for both classes to determine which class has more consistent scores.



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