Page 212 - Data Science class 10
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13.  What are facts?
         Ans.  Facts are true and cannot be argued with, because they can be proven and are supported by evidence.

          14.  What are opinions?
         Ans.  An opinion is a statement that expresses a feeling, an attitude, a value judgment, or a belief. It is a statement
              that is neither true nor false.

          15.  What do you mean by preference?
         Ans.  Preference is the act of selecting or having a particular preference for one person or thing rather than
              another or others.

          16.  What do you mean by prejudice?
         Ans.  Prejudice means preconceived opinion that is not based on reason or actual experience.

          17.  What is confirmation bias?
         Ans.  Confirmation bias is something which does not happen due to the lack of data availability. It is a phenomenon
              wherein data scientists or analysts tend to lean towards data that is in alignment with their beliefs, views,
              and opinions.

          18.  What is probability?
         Ans.  Probability refers to the possibility of something happening. It is a mathematical concept that predicts how
              likely events are to occur.

          19.  What is a sampling error?
         Ans.  A sampling error is a deviation in the sampled value versus the true population value.

          20.  What is sampling?
         Ans.  Sampling is an analysis performed by selecting a number of observations from a larger population.

          21.  What is Z-score?
         Ans.  A z-score defines the position of a point in terms of its distance from the mean when it is calculated in
              standard deviation units.

          22.  What is data governance?
         Ans.  Data governance is a collection of processes, roles, policies, standards, and metrics that ensure the effective
              and efficient use of information to help an organisation reach its objectives.

          23.  What do you mean by disposition?
         Ans.  Disposition refers to the wide range of actions undertaken to manage records over time, which may include
              retention, destruction, or transfer to archival storage.

          24.  What is destruction?
         Ans.  Destruction is the act of disposing of records permanently by obliterating records so that the information in
              them can no longer be physically or electronically reconstructed or recovered.

          25.  What is shredding?
         Ans.  Shredding is an excellent technique to erase data if you have a huge enterprise data center or a large
              stockpile of old media that you want to destroy.









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