Numerical & Statistical Methods

Complete Unit-wise notes following Syllabus

Unit 1: Errors and Floating Point Numbers

Errors and Floating Point Numbers: Understand different types of numerical errors, floating-point representation, arithmetic operations, and iterative methods for solving nonlinear equations.

Key Topics:

  • Introduction to Errors in Numerical Computation
  • Sources of Errors (Human, Truncation, Round-off, etc.)
  • Types of Errors – Absolute, Relative, Percentage, and Gross Errors
  • Representation of Floating-Point Numbers
  • Arithmetic Operations on Floating-Point Numbers
  • Normalization of Floating-Point Numbers
  • Pitfalls and Limitations of Floating-Point Representation
  • Solution of Nonlinear Equations – Concept of Roots and Zeros
  • Methods for Solving Nonlinear Equations: Bisection, Iteration, Regula-Falsi, Newton-Raphson
  • Rate of Convergence of Iterative Methods
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Unit 2:Solution of Linear Equations and Interpolation

Solution of Linear Equations and Interpolation: Learn methods for solving systems of linear equations using direct and iterative techniques. Understand interpolation, finite differences, and polynomial formulas for equal and unequal intervals.

Key Topics:

  • Introduction to Systems of Linear Equations
  • Direct Methods – Gauss Elimination Method
  • Gauss Jordan Method and Matrix Inversion Method
  • Pivoting and Ill-Conditioned Systems of Equations
  • Iterative Methods – Gauss Jacobi and Gauss Seidel Methods
  • Interpolation and Approximation – Concepts and Uses
  • Finite Differences and Difference Tables
  • Polynomial Interpolation for Equal Intervals – Newton’s Forward and Backward Formulas
  • Central Difference Formulas – Gauss Forward, Gauss Backward, Stirling’s, and Bessel’s Formulas
  • Polynomial Interpolation for Unequal Intervals – Lagrange’s and Newton’s Divided Difference Formulas
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Unit 3:Numerical Differentiation and Integration

Numerical Differentiation and Integration: Study techniques for approximating derivatives and integrals numerically. Learn different rules of integration and numerical methods for solving ordinary differential equations.

Key Topics:

  • Concept of Numerical Differentiation
  • Numerical Differentiation using Newton’s Formulae
  • Numerical Differentiation using Central Difference Formulae
  • Concept of Numerical Integration
  • Trapezoidal Rule for Integration
  • Simpson’s 1/3 and 3/8 Rules for Integration
  • Introduction to Ordinary Differential Equations (ODEs)
  • Picard’s Iterative Method for ODEs
  • Euler’s Method for Solving ODEs
  • Runge–Kutta Method (Second and Fourth Order)
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Unit 4: Curve Fitting and Statistics

Curve Fitting and Statistics: Explore curve fitting techniques using least squares, and understand basic statistical measures including frequency charts, central tendency, and dispersion methods.

Key Topics:

  • Concept and Importance of Curve Fitting
  • Least Squares Method – Theory and Applications
  • Fitting of Straight Line
  • Fitting of Polynomial Curves
  • Fitting of Exponential and Other Nonlinear Curves
  • Introduction to Statistics – Basic Terms and Concepts
  • Frequency Charts – Histogram, Frequency Curve, and Pie Chart
  • Measures of Central Tendency – Mean, Median, Mode
  • Absolute Measures of Dispersion – Range, Interquartile Range
  • Relative Measures of Dispersion – Mean Deviation and Standard Deviation
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