CUET Mathematics - Based on the data available for the production (y_i in thousand tons) of a cloth factory for 7 years (x_i) using the method of least squares, the straight line trend is given by y = a + bx with y_i = 608, x_i = 0, x_iy_i = 116, x_i^2 = 28. Then, the increase in production per year is: | PYQs + Solutions

CUET Mathematics 2025 3 June Shift 1

Statistics & Applications

Medium

applied

86.860 tons

4.143 tons

1,16,000 tons

6,08,000 tons

✅ Correct Option: 2

Related questions:

21 May Shift 2

Let $y = 138.86 + 7.64(x - 2021)$ be a straight line of best fit by using least square method to the following data:

Year(x)	2018	2019	2020	2021	2022	2023	2024
Profit(y) (in Rs. '000)	114	130	126	144	138	156	164

Then the trend value for the year 2024 is:

22 May Shift 1

The sale of ice creams is higher in summer than in winter is an example of

21 May Shift 1

If $(t_1, y_1), (t_2, y_2), (t_3, y_3), ..., (t_n, y_n)$ denote the time series and $y_t$ are the trend values of the variable y, then $\sum(y - y_t)$ , the sum of the deviations of y from their corresponding trend value is equal to:

CUET Mathematics 2025 3 June Shift 1 PYQs

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