Curve Fitting by Least Squares Multiple Choice Questions and answers (mcqs)

 1- A linear Curve is: ?

(A) Y = a + b X       (B) Y = ab

Option (A) is correct.

Note: You already know that ' Y = a + b X ' is also a Regression line.

2- The Equation of Hyperbola is: ?

(A) 1/B = X            (B) 1/Y = a + b X

Option (B) is correct.

3- We fit an Exponential Curve If the first differences of the Logarithms are approximately: ?

(A) Constant          (B) Variable

Option (A) is correct.

4- For better the Fit, The Sum of Squares must be: ?

(A) Bigger              (B) Smaller 

Option (B) is correct.

5- Non-Linear Form is: ?

(A) 1/Y = a + b/1 + X     (B) Y = a + b X

Option (A) is correct.

6- Logistic Curve has _ different Stages: ?

(A) 4                      (B) 3

Option (A) is correct.

Note: Must focus on that's, Logistic Curve has Stages; 1- Period of relatively slow growth, 2- Period of accelerated growth, 3- Period of Decelerated growth, 4- Period of Stability.

7- We Fit a Reciprocal line 1/Y = a + b X, If the reciprocals of data show a _ when plotted in a graph: ?

(A) Regression line     (B) Straight line

Option (B) is correct.

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