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Method of Least Squares, Business Mathematics and Statistics Video Lecture | SSC CGL Tier 2 - Study Material, Online Tests, Previous Year

FAQs on Method of Least Squares, Business Mathematics and Statistics Video Lecture - SSC CGL Tier 2 - Study Material, Online Tests, Previous Year

1. What is the method of least squares in business mathematics and statistics?

Ans. The method of least squares is a statistical technique used to find the best-fitting line or curve that minimizes the sum of the squared differences between the observed and predicted values. It is commonly used in regression analysis to estimate the parameters of a linear model by minimizing the residual sum of squares.

2. How is the method of least squares applied in business decision-making?

Ans. The method of least squares is applied in business decision-making to analyze and interpret relationships between variables. By fitting a regression line through a set of data points, it helps in predicting the value of one variable based on the values of other variables. This enables businesses to make informed decisions by understanding the impact of various factors on their outcomes.

3. What are the advantages of using the method of least squares in business mathematics and statistics?

Ans. The method of least squares offers several advantages in business mathematics and statistics. It provides a systematic approach to estimate the parameters of a regression model, allowing businesses to quantitatively analyze relationships between variables. It also helps in identifying outliers or influential observations that may affect the overall model. Additionally, it provides a measure of goodness-of-fit, allowing businesses to assess the accuracy and reliability of their predictions.

4. Can the method of least squares be used for non-linear relationships in business mathematics and statistics?

Ans. Yes, the method of least squares can be used for non-linear relationships in business mathematics and statistics. While it is commonly used for linear regression, it can also be extended to non-linear regression models by transforming the original variables or introducing additional variables. Non-linear regression models can capture more complex relationships between variables, allowing businesses to make more accurate predictions and decisions.

5. How can businesses validate the results obtained through the method of least squares in business mathematics and statistics?

Ans. Businesses can validate the results obtained through the method of least squares by assessing the goodness-of-fit measures such as the coefficient of determination (R-squared) and the residual analysis. R-squared indicates the proportion of the variation in the dependent variable that can be explained by the independent variables. Residual analysis involves examining the residuals (differences between observed and predicted values) for patterns or deviations from assumptions. By validating the results, businesses can ensure the reliability of their regression model and the accuracy of their predictions.

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Jul 12, 2025 Last updated

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