Example of individual task

Individual task of

the course "Statistics"

Part 1

According to a statistical survey conducted by the companies that are listed in Table. 1, perform the following tasks:

1. Make a grouping of enterprises in terms of exports (form 4 groups with equal intervals) and ownership. Characterize each group.

2. Make analytical grouping of companies by finding the relationships between the volume of investment and the amount of profit.

3. Make grouping of enterprises by branch purpose of investment. Characterize each group of businesses by the amount of enterprises and the volume of investment (in general and in % to the total).

4. Make the grouping of companies by the degree of investment risk. Characterize each group by the amount of businesses and average volume of investments.

5. Portray graphically the grouping of enterprises in terms of exports as a histogram.

The results of groupings are to be presented in the form of statistical tables.

Part 2

On the basis of the grouping done in p. 2, part 1,determine for the factor variable:

1. Mean, mode and median.

2. Indicators of variation (dispersion, standard deviation, coefficient of variation).

Table 1

Foreign economic activity of enterprises in Ukraine, 2006 (conditional data)

№ of enterprise	Form of ownership	The volume of investments, thsd. USD	Sectoral destination of investments	Level of investment risk	The volume of export, thsd. USD	Profit, thsd. USD
1	Joint	350	Agriculture	High- risk	260	100
2	Foreign	2450	Industry	Medium-risk	310	64
3	State	850	Trade	Low- risk	305	85
4	Private	3300	Transport	Medium-risk	740	120
5	Joint	2500	Services	Medium-risk	680	150
6	Foreign	1900	Industry	Low- risk	540	148
7	State	300	Industry	Low- risk	690	132
8	Private	1650	Science	High- risk	280	112
9	Joint	1900	Industry	Medium-risk	310	135
10	Foreign	950	Trade	Low- risk	420	142
11	State	1100	Transport	Low- risk	540	146
12	Private	2650	Science	Low- risk	500	169
13	Joint	3650	Industry	High- risk	605	172
14	Joint	950	Agriculture	Medium-risk	710	88
15	Foreign	1050	Agriculture	Low- risk	690	74
16	State	1450	Industry	Low- risk	650	69
17	Private	350	Trade	High- risk	640	75
18	Joint	2650	Transport	Medium-risk	480	234
19	Private	1350	Services	Low- risk	410	139
20	Joint	2950	Industry	Medium-risk	474	282