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1) You are an economic researcher in Xyz Company. You have collected the following hourly salaries of the 120 workers in the organization. The manager requires you to organize the data in 10s, 20s, 30 s… 100s and use histogram to show him the highest and lowest range.

70	10	96	13	96	52
51	60	20	52	20	51
30	96	37	51	37	33
74	17	18	33	18	73
40	68	11	73	11	83
78	52	90	83	90	94
10	69	43	94	43	81
37	37	53	81	53	44
96	70	44	60	44	53
60	45	53	76	53	39
87	90	39	17	39	58
11	65	58	70	58	10
35	86	10	41	10	83
81	62	83	91	83	20
80	70	20	34	20	43
27	44	43	56	43	24
83	57	24	42	24	74
40	82	38	71	38	40
64	22	89	81	89	78
22	77	25	54	13	10

2) In XYZ Company a training was given for the 120 students and the grade distribution was as follows. Use the less than and more than OGIVE line graphs to display the distribution.

Grade No of trainees

5 -10 8

10-15 12

15 -20 20

20-25 40

25 -30 36

30 – 35 4

3. The distribution of workers in Walmart shows the following:

African-American - 5648

Whites - 2879

Hispanics - 8795

Others – 3658

Show the above distribution in pie chart.

4. Use the data in question number 1 to find mean, mode, median of the individual observation

5. The following discrete series data, which is delays of incoming materials in hours, were recorded by the shop floor assistant

Delays in hours	number of cars
1	25
2	27
3	34
4	45
5	21
7	4
8	12
9	8
10	2

Find the average, median and mode hours of delay?

6- An economist has collected the following continuous series, which is income data from 400 people living in a AB county. Find the mean, median and mode income.

Income group Number of people

100 - 150 11

150 - 200 21

200 - 250 18

250 - 300 14

300 - 350 25

350- 400 54

400 - 450 45

450- 500 25

500 - 550 22

550- 600 15

600-650 14

650-700 20

700-750 22

750-800 35

800-850 24

850-900 14

900-950 12

950-1000 9

7) you have gathered the following income data from 10 people working in an organization.

10000, 12000, 8000, 14000, 7000, 150000

Find the mean and median income. Which measure do you think seems reasonable? Why?

70	10	96	13	96	52
51	60	20	52	20	51
30	96	37	51	37	33
74	17	18	33	18	73
40	68	11	73	11	83
78	52	90	83	90	94
10	69	43	94	43	81
37	37	53	81	53	44
96	70	44	60	44	53
60	45	53	76	53	39
87	90	39	17	39	58
11	65	58	70	58	10
35	86	10	41	10	83
81	62	83	91	83	20
80	70	20	34	20	43
27	44	43	56	43	24
83	57	24	42	24	74
40	82	38	71	38	40
64	22	89	81	89	78
22	77	25	54	13	10

70	10	96	13	96	52
51	60	20	52	20	51
30	96	37	51	37	33
74	17	18	33	18	73
40	68	11	73	11	83
78	52	90	83	90	94
10	69	43	94	43	81
37	37	53	81	53	44
96	70	44	60	44	53
60	45	53	76	53	39
87	90	39	17	39	58
11	65	58	70	58	10
35	86	10	41	10	83
81	62	83	91	83	20
80	70	20	34	20	43
27	44	43	56	43	24
83	57	24	42	24	74
40	82	38	71	38	40
64	22	89	81	89	78
22	77	25	54	13	10

70	10	96	13	96	52
51	60	20	52	20	51
30	96	37	51	37	33
74	17	18	33	18	73
40	68	11	73	11	83
78	52	90	83	90	94
10	69	43	94	43	81
37	37	53	81	53	44
96	70	44	60	44	53
60	45	53	76	53	39
87	90	39	17	39	58
11	65	58	70	58	10
35	86	10	41	10	83
81	62	83	91	83	20
80	70	20	34	20	43
27	44	43	56	43	24
83	57	24	42	24	74
40	82	38	71	38	40
64	22	89	81	89	78
22	77	25	54	13	10