The variance of the following data is x_i 1 2 3 4 5 6 7 8 9 10 f_i 1 2 3 4 5 6 7 8 9 10

AP EAMCET Engineering 23 Apr 2019 Shift 1 Paper

Section: Mathematics

Question : 35 of 160

Marks: +1, -0

The variance of the following data is

xi	1	2	3	4	5	6	7	8	9	10
$f_i	1	2	3	4	5	6	7	8	9	10

xi	(fi)	xifi	x−xi	fi(x−xi)2
1	1	1	6	36
1	2	4	5	50
3	3	9	4	48
4	4	16	3	36
5	5	25	2	20
6	6	36	1	6
7	7	49	0	0
8	8	64	1	8
9	9	81	2	36
10	10	100	3	90

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xi	(fi)	xifi	x−xi	fi(x−xi)2
1	1	1	6	36
1	2	4	5	50
3	3	9	4	48
4	4	16	3	36
5	5	25	2	20
6	6	36	1	6
7	7	49	0	0
8	8	64	1	8
9	9	81	2	36
10	10	100	3	90

xi	(fi)	xifi	x−xi	fi(x−xi)2
1	1	1	6	36
1	2	4	5	50
3	3	9	4	48
4	4	16	3	36
5	5	25	2	20
6	6	36	1	6
7	7	49	0	0
8	8	64	1	8
9	9	81	2	36
10	10	100	3	90

xi	(fi)	xifi	x−xi	fi(x−xi)2
1	1	1	6	36
1	2	4	5	50
3	3	9	4	48
4	4	16	3	36
5	5	25	2	20
6	6	36	1	6
7	7	49	0	0
8	8	64	1	8
9	9	81	2	36
10	10	100	3	90