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      Question

      In data analysis, a "sparse matrix" is often used. What

      is the defining characteristic of a sparse matrix?
      A All its elements are non-zero. Correct Answer Incorrect Answer
      B It has an equal number of rows and columns. Correct Answer Incorrect Answer
      C The majority of its elements are zero. Correct Answer Incorrect Answer
      D It can only store integer values. Correct Answer Incorrect Answer
      E It is always a square matrix. Correct Answer Incorrect Answer

      Solution

      A sparse matrix is a matrix in which a significant proportion of the elements are zero. Storing only the non-zero elements can save memory and computation time.

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