Page 447 - AI Ver 3.0 Class 11
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16.   What is structured data?
                   Ans.   Structured data is formatted, and has a predefined data type and arrangement.
                    17.   What is a variable?

                   Ans.   A variable is a named storage location that holds a value which can be changed during program execution.
                    18.   What do you mean by level of measurement?
                   Ans.   The level of measurement refers to the relationship between the values given to the attributes of a variable.
                    19.   Name any 2 applications of KNN algorithm.

                   Ans.   Image recognition and financial forecasting.
                    20.   What is an outlier. How can it impact an AI model?
                   Ans.     An outlier is a data point that deviates greatly from usual observations or patterns. These unexpected data
                          points can have a substantial impact on the accuracy and dependability of machine learning systems.
                    21.   Which goals do SDG 7 and SDG 8 refer to?
                   Ans.   SDG 7 – Clean and affordable energy, SDG 8 – Decent work and economic growth.
                    22.   What is a centroid?

                   Ans.   A centroid is an imaginary or real location denoting the centre of the cluster.
                    23.   What do you understand by the term ‘sentiment analysis’?
                   Ans.     Sentiment analysis is a Natural Language Processing (NLP) technique for determining whether a piece of text
                          is positive, negative, or neutral. It's sometimes referred to as emotion AI.
                    24.   What is mean?

                   Ans.     The mean is the average of a set of numbers, calculated by dividing the sum of all values by the number of
                          values.

                    25.   What do you mean by median?
                   Ans.   The median is the middle value in a given list of numbers arranged in ascending or descending order.
                    26.   Define mode.
                   Ans.   The mode is the value that appears most often in a given list of numbers.
                    27.   What is the meaning of bias?

                   Ans.   Bias is any prejudice against individuals or groups, especially in ways that are considered unfair.
                    28.   Name any two fields where AI doing good.
                   Ans.   Fraud protection and Environmental planning
                    29.   Give any one example of how AI saves lives.

                   Ans.   Rescue robots perform dangerous search and rescue missions using machine intelligence systems.
                    30.   Kanika is a journalist covering the annual tech summit in Bangalore, where she needs to quickly analyse and
                          summarize speeches from various tech leaders. With limited time and a large volume of content, she relies on
                          a technique to automatically summarize key points from the speeches, allowing her to efficiently draft articles
                          for her publication. Identify this technique.

                   Ans.   Automatic summarisation
                    31.   Why is AI Ethics Important?
                   Ans.     AI Ethics framework is important because it highlights the risks and benefits of artificial intelligence tools, and
                          provides guidelines for their responsible use.
                    32.   Name the 3 sources of bias.
                   Ans.   Training bias, cognitive bias, algorithmic bias.

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