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5.  How is standard deviation related to variance?
                   Ans.  Standard deviation is the square root of the variance, and it provides a measure of how spread out the values are in
                       the original units (not squared units, like variance). It gives a sense of how “far” the data points are from the mean on
                       average.
                    6.  What is statistical sampling?

                   Ans.  Statistical sampling is a method used to select a smaller group (sample) from a larger group (population) to study.
                       Instead of analysing every individual in a dataset, researchers study the sample and generalize findings to the whole
                       population.

                    7.  What is Teachable Machine?
                   Ans.  Teachable Machine is a web-based tool developed by Google in November 2017. It allows anyone to create machine
                       learning models easily, without needing any coding knowledge. It is especially designed to help people train models
                       for tasks such as image recognition, sound classification, and pose detection, using their own data. The main idea
                       behind Teachable Machine is to make machine learning accessible to everyone, whether you’re a beginner or not.

                    8.  Name any four popular no-code AI tools.
                   Ans.  Some of the popular no-code AI tools are:
                       • Teachable Machine           • Azure Machine Learning
                       • Orange Data Mining          • Google Cloud AutoML
                    9.  Differentiate between Custom Code, Low Code and No Code.
                   Ans.  The difference between Custom Code, Low Code and No code are as follows:

                        Custom Code/High Code            Low Code                     No Code
                        High-code development refers     Low-code development involves  No-code development extends the
                        to the conventional method of    using platforms or tools that   principles of low-code by enabling
                        software creation, where developers   offer visual interfaces and   users to create applications without
                        build applications by writing code   pre-built components,    the need for any coding or scripting
                        manually from the ground up using   simplifying and accelerating   knowledge.
                        programming languages like Java,   the application development
                        Python, C#, and others.          process.
                        Coders are needed to write all the   Programmers are required to   Coding knowledge is not necessary,
                        code manually.                   write some code manually.    allowing anyone to create the product.
                        It is expensive.                 It is less expensive compared to   It is less expensive compared to
                                                         high-code.                   Low-code.
                        You have the flexibility to create   You can customise your product  No-Code AI tools have limited
                        anything and customise your product  only to a certain extent using   customisation options, as they are
                        in any way you desire.           code.                        restricted to the functions available
                                                                                      within the tool. However, they are
                                                                                      simple to use, offering drag-and-drop
                                                                                      features instead of requiring coding.


                    10.  Why do we need No-Code AI? Give any four reasons.

                   Ans.  We need No-Code AI tools because:
                       • When coding, we often come across different types of errors, and it can be frustrating at times.
                       •  No-Code  AI  allows  non-technical  people—like  business  owners,  marketers,  and  analysts—to  create  and  use
                          AI without needing to know how to code.


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