1. kirish tanlanma o‘rtacha qiymat va tanlanma dispersiyani hisoblashning ko‘paytmalar metodi

Mustaqil ishlash uchun misollar
Ko‘paytmalar metodi va yig‘indilar metodi yordamida quyidagi statistik taqsimotning tanlanma o‘rtacha qiymatini va tanlanma dispersiyasini toping:

1		3.2	3.4	3.6	3.8	4.2	4	4.4	4.6	4.8	5
		4	7	8	10	15	25	12	10	4	5
2		7.1	7.3	7.5	7.7	8.1	7.9	8.3	8.5	8.7	8.9
		6	7	12	15	10	30	8	6	4	2
3		3.5	4	4.5	5	6	5.5	6.5
		5	10	17	30	12	20	6
4		4.7	4.8	4.9	5	5.2	5.1	5.3	5.4	5.5
		6	13	38	74	85	106	30	10	4
5		1.4	1.8	2.2	2.6	3.4	3
		4	6	30	40	2	18
6		2.3	2.6	2.9	3.2	3.8	3.5
		2	5	25	15	3	5
7		11.7	11.9	12.1	12.3	12.5
		4	7	20	15	3
8		5	5.5	6	6.5	7
		18	20	25	22	15
9		9.4	9.6	9.8	10	10.4	10.2
		10	20	40	30	5	15
10		7.6	7.7	7.8	7.9	8.1	8
		5	10	25	20	4	15
11		14	16	18	20	24	22	26
		7	12	16	30	15	25	6
12		4.2	4.5	4.8	5.1	5.7	5.4	6
		10	15	18	24	14	20	5
13		2	5	8	11	17	14
		6	12	30	25	4	20
14		2.3	2.6	2.9	3.2	3.8	3.5	9.1
		10	13	16	28	17	23	7
16		7.3	7.8	8.3	8.8	9.8	9.3	10.3	10.8
		15	18	23	25	32	35	22	13
17		1.1	1.2	1.3	1.4	1.6	1.5	1.7	1.8
		19	25	28	30	35	40	24	15
18		5.3	5.6	5.9	5.2	5.8	5.5	6.1	6.4
		20	25	35	40	32	50	23	15
19		2.1	2.4	2.7	3	3.6	3.3	3.9	4.2
		10	15	20	22	30	35	25	12
20		4.3	4.5	4.7	4.9	5.3	5.1	5.5	5.7
		15	25	30	35	40	45	30	20
21		6.2	6.7	7.2	7.7	8.7	8.2	9.2	9.7
		6	8	13	15	20	25	14	5
22		7.1	7.2	7.3	7.4	7.6	7.5	7.7	7.8
		10	16	18	20	28	30	15	8
23		4.2	4.5	4.7	4.9	5.3	5.1	5.5	5.7
		5	8	12	15	22	25	13	7
24		6	7	8	9	11	10	12	13
		10	14	18	20	21	26	13	8
25		1.6	1.8	2	2.2	2.6	2.4	2.8	3
		2	5	8	12	15	20	7	3
26		6.2	6.6	7	7.4	8.2	7.8	8.6	9
		3	10	15	25	30	40	20	5

27		13	15	17	19	23	21	25	27
		10	15	18	20	25	30	16	12
28		8.6	8.8	9	9.2	9.6	9.4	9.8	10
		4	7	9	11	10	15	6	5
29		2.5	3	3.5	4	5	4.5	5.5	6
		15	17	20	22	23	25	16	13
30		4.1	4.4	4.7	5	5.6	5.3
		10	14	21	28	15	23
31		6.3	6.4	6.5	6.6	6.9	6.7	6.5
		3	6	8	14	30	16	35
32		4.6	4.7	4.8	4.9	5.1	5
		6	15	19	24	30	26
33		9.3	9.5	9.7	9.9	10.3	10.1	10.5