Which of the following statements are correct? (A) The method of least squares determines the position of the trend line of the given time series.…
CUET UG 2025 — Mathematics Statistics & Applications
Which of the following statements are correct?
(A) The method of least squares determines the position of the trend line of the given time series.
(B) The trend line is called the line of best fit.
(C) The line of best fit is a line in which the sum of deviations of the actual values of the variable from their corresponding trend value is always positive.
(D) The normal equations of the trend line y=a+bx are ∑y=na+b∑x and ∑xy=a∑x+b∑x2, where n is the numbers of observations.
Choose the correct answer from the options given below:
Held on 13 May 2025 · Verified 13 Jul 2026.
Options
- A
(A), (B) and (C) only
- B
(A), (B) and (D) only
- C
(A), (C) and (D) only
- D
(B), (C) and (D) only
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