For a given data of 5 observation y = 311, x^2 = 10 and xy = 90. The equation of the trend line is : Option 1: y_t = 62.2 + 9x Option 2: y_t = 9 + 62.2x Option 3: y_t = 31.1 + 18x Option 4: y_t = 18 + 31.1x

The answer is 'y_t = 62.2 + 9x'. View full solution:

CUET Mathematics - For a given data of 5 observation y = 311, x^2 = 10 and xy = 90. The equation of the trend line is : | PYQs + Solutions

CUET Mathematics 2023 7 June Shift 1

Applied Mathematics

Medium

$y_t = 62.2 + 9x$

$y_t = 9 + 62.2x$

$y_t = 31.1 + 18x$

$y_t = 18 + 31.1x$

✅ Correct Option: 1

Related questions:

15 June Shift 2

The prices and the quantities of three commodities are given are :

Commodity	Price (₹) in Year 2006	Price (₹) in Year 2009	Quantities in Year 2006	Quantities in Year 2009
P	100	90	12	10
Q	80	$x$	8	7
R	60	50	4	6

The Laspeyre's price index number for year 2009 with year 2006 as base is 200. The value of $x$ is :

30 May Shift 3

Using simple average of relatives method, the price index for 2011, taking 2001 as base year, was found to be 127. If $\Sigma p_0 = 263$ , then x and y from the following data are :

Commodities	A	B	C	D	E	F
Prices (in Rs.) in 2001	80	70	x	20	18	25
Prices (in Rs.) in 2011	100	87.50	61	22	y	32.50

30 May Shift 3

Match List - I with List - II.

Given that $\Sigma p_0 q_0 = 150$ , $\Sigma p_0 q_1 = 80$ , $\Sigma p_1 q_0 = 240$ , $\Sigma p_1 q_1 = 200$ .

List - I	List - II
(A) Laspeyre's index	(I) 160
(B) Paasche's index	(II) 200
(C) Fesher's index	(III) 205
(D) Dorbish and Bowley's	(IV) 250

Choose the correct answer from the options given below :

CUET Mathematics 2023 7 June Shift 1 PYQs

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