Page 246 - AI Ver 1.0 Class 10
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• Consent of the owner of the data should be seeked, before using someone’s personal dataset.
                       • Data present in the public domain should preferably be used, if available.
                  2.  Explain the Box Plot graph.
                Ans.   It represents the summary of the set of data values where a box is created for each having properties like minimum,
                    first quartile, median, third quartile and maximum. A vertical line goes through the box at the median. Here x-axis
                    denotes the data to be plotted while the y-axis shows the frequency distribution.
                       Box plots are used to plot outliers and these outliers are plotted outside the graph as dots or circles since they do not
                    belong to the range of data and are part of the graph for visualisation.
                  3.  Differentiate between arrays and lists in Python.
                Ans.  The following are the differences between arrays and lists:

                                         Arrays                                           Lists

                      Array is a collection of homogeneous values.   List is a collection of heterogeneous values.
                      In Arrays data of one type does not support data of  List it works perfectly by using data of one type by converting
                      another type.                                into another datatype.

                      Arrays  can  be  accessed  only  through  package-  List  occupies  more  memory  space  and  can  be  accessed
                      NumPy and occupies less memory space.        directly in Python without any package support.

                                                                   In list the mathematical operators cannot be used directly
                      In arrays the mathematical operators can be directly   on  it  instead  need  to  be  used  separately  on  individual
                      used.
                                                                   elements.



                                                     Unsolved Questions

                                               SECTION A (Objective Type Questions)
                    uiz

              A.  Tick ( ) the correct option.
                  1.  Which data visualisation technique uses dots to display values from two variables in a graph?
                    a.  Scatter plots                                  b.  Pie chart

                    c.  Pandas                                         d.  Matplotlib
                  2.   SQL is the accepted acronym for which of the following?
                    a.  Simple Query Language                          b.  Structured Query Language

                    c.  Simple Question Language                       d.  Structured Queue Language
                  3.  ………………………. is the squared deviation of a variable from its mean. Basically, it measures the spread of random data
                    in a set from its mean or median value.
                    a.  Mean() function                                b.  Mode() function

                    c.  Variance() function                            d.  None of these
                  4.  ………………………. is meant by representing data in visual context.
                    a.  Advanced computing                             b.  Visualisation

                    c.  Machine learning                               d.  Statistics






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