Descriptive Statistics and Probability

Do you need this or any other assignment done for you from scratch?
We have qualified writers to help you.
We assure you a quality paper that is 100% free from plagiarism and AI.
You can choose either format of your choice ( Apa, Mla, Havard, Chicago, or any other)

NB: We do not resell your papers. Upon ordering, we do an original paper exclusively for you.

NB: All your data is kept safe from the public.

Click Here To Order Now!

Modern world is based on numbers. Mathematics and statistics are the main sciences which support the modern world. Economics, politics, countries’ studies are fully subordinate from numbers and calculations. Every economical document, every country affair is supported by statistics. Population and business companies are the main consumers of statistical services. Statistics is not the exact science, and some deviation is possible.

Statistic is “a value, usually a numerical value, that describes a sample. A statistics may be obtained from a single measurement, or it may be derived from a set of measurements from the sample” (Gravetter & Wallnau, 2006 p. 6). To provide the statistical measurement a lot of information (data) should be collected, then analyzed and only then the statistical methods are used to interpret this data and make conclusions. There are a lot of methods, which statistics uses to make conclusions. Descriptive statistics is one of them. Descriptive statistics are “statistical procedures used to summarize, organize, and simplify data” (Gravetter & Wallnau, 2006 p. 6).

Descriptive statistics is used to organize and interpret the data. Let us give the example of the descriptive statistics on the information about the development of population in the states of the USA from April, 2000 till the July, 2008 (Table 1). This is the data analysis of the population growth (reduce) of the population in the states of the USA, which are organized in the table. There are some other ways to organize descriptive statistics, such as diagrams and graphs. The other type of the descriptive statistics, that is bar graph, may be seen on Table 2.

Statistics is used everywhere. Business is not an exception: accounting, finance, marketing, production and economics are not the only spheres where people use statistics. Statistics is very important in sales analysis, as the company should follow the information what type of the product is in great demand and which one is in abundance on the market. People’s interests can also be seen from the statistics, as “brand managers can review the scanner statistics and the promotional activity statistics to gain a better understanding of the relationship between promotional activities and sales” (Anderson, 2007 p. 5). Good gathered data, which reflects the dynamics of customers’ interests to this and that product for the last 5 – 10 years, may help managers to create the strategic plan of the company for the next 5 – 10 years with the reference to customers’ interests.

The information about sales may also be put in the EXCEL table or the graph, which is very convenient. The first column may contain the sales rate in 1999, the next in 2004, and the last in 2009. In this case the information may be seen how one and the same product was sold in different years. The given information is not enough to make up a strategic plan of the company, but a lot of conclusions may be provided from the statistical data of sales.

As it was mentioned above, statistics is not an exact science, so some possibility for chances exists. “To be able to draw logical conclusions from data, we usually make some assumptions about the chances (or probabilities) of obtaining the different data values. The totality of these assumptions is referred to as a probability model for the data” (Ross). In other words, probability shows in which case and with what rate this event may either occur or not. Probability is closely connected with the statistics as one event has the probability to occur in the situation when the other supportive event takes place. (Lipschutz, 2000)

It is certain that different probabilities may mislead the business decisions. Managers may take up wrong decisions focusing on the wrong data, or misunderstand the statistical issues. There are at least 3 outcomes of every business decision, 0 the probability is irrelevant, 1 it is sure to occur, and a lot of other situations may happen if the rate of probability between 0 and 1. (Spiegel et al, 2002) While making a decision a human factor is very important.

Considering the type of probabilities that can be encountered during a person’s employment, it should be mentioned that a lot of factors may influence the person’s chance to be employed in this or that company. There are two main probabilities, whether the person will be taken to the job, or not. The other probabilities deal with the chances whether the employee will be taken on the position he/she requires, or the other one. The situation with the probability of the salary is also the same, whether the person will get the salary he/she wants, or the offer will be to accept the lower salary.

These probabilities may be either used by the employee or not. There are a lot of circumstances, which should be taken into consideration. The first, and the main, in my opinion, is the experience and skills of the employee. If the employee has great experience in the field or on the required position, so it should be unacceptable for him/her to take up the lower position or to accept the low salary. The employer should also take into consideration these probabilities and to offer lower salary to the person with little seniority and lack of experience. The information about previous work of the employee should also be focused on by the employer.

So, statistics is very important discipline in the business and other sciences and field of people’s lives, such as population counting. Statistics is not exact science, so the notion of probability should be taken into consideration, as one event may either occur or not in different conditions.

Reference List

Anderson, D. R. (2007). Statistics for business and economics. Cengage Learning EMEA.

Gravetter, F. J. & Wallnau, L. B. (2006). Statistics for the Behavioral Sciences. Cengage Learning.

Lipschutz, S. (2000)..Schaum’s outline of theory and problems of probability. McGraw-Hill Professional.

Ross, S. M. (2004). Introduction to probability and statistics for engineers and scientists. Academic Press.

Spiegel, M. R., Schiller, J. J.& Srinivasan, A. (2002).Probability and statistics. McGraw-Hill Professional.

Table 1

State April 1, 2000 July 1, 2008 Percent change, 2000 to 2008
United States 281 424 602 304 059 724 8,0
Northeast 53 594 797 54 924 779 2,5
Midwest 64 395 207 66 561 448 3,4
South 100 235 848 111 718 549 11,5
West 63 198 750 70 854 948 12,1
Alabama 4 447 355 4 661 900 4,8
Alaska 626 931 686 293 9,5
Arizona 5 130 607 6 500 180 26,7
Arkansas 2 673 386 2 855 390 6,8
California 33 871 650 36 756 666 8,5
Colorado 4 302 015 4 939 456 14,8
Connecticut 3 405 604 3 501 252 2,8
Delaware 783 595 873 092 11,4
District of Columbia 572 053 591 833 3,5
Florida 15 982 813 18 328 340 14,7
Georgia 8 186 812 9 685 744 18,3
Hawaii 1 211 538 1 288 198 6,3
Idaho 1 293 955 1 523 816 17,8
Illinois 12 419 660 12 901 563 3,9
Indiana 6 080 522 6 376 792 4,9
Iowa 2 926 381 3 002 555 2,6
Kansas 2 688 816 2 802 134 4,2
Kentucky 4 042 284 4 269 245 5,6
Louisiana 4 468 968 4 410 796 -1,3
Maine 1 274 922 1 316 456 3,3
Maryland 5 296 516 5 633 597 6,4
Massachusetts 6 349 113 6 497 967 2,3
Michigan 9 938 492 10 003 422 0,7
Minnesota 4 919 492 5 220 393 6,1
Mississippi 2 844 666 2 938 618 3,3
Missouri 5 596 678 5 911 605 5,6
Montana 902 190 967 440 7,2
Nebraska 1 711 266 1 783 432 4,2
Nevada 1 998 257 2 600 167 30,1
New Hampshire 1 235 785 1 315 809 6,5
New Jersey 8 414 360 8 682 661 3,2
New Mexico 1 819 041 1 984 356 9,1
New York 18 976 816 19 490 297 2,7
North Carolina 8 046 500 9 222 414 14,6
North Dakota 642 195 641 481 -0,1
Ohio 11 353 160 11 485 910 1,2
Oklahoma 3 450 640 3 642 361 5,6
Oregon 3 421 437 3 790 060 10,8
Pennsylvania 12 281 052 12 448 279 1,4
Rhode Island 1 048 319 1 050 788 0,2
South Carolina 4 011 809 4 479 800 11,7
South Dakota 754 837 804 194 6,5
Tennessee 5 689 270 6 214 888 9,2
Texas 20 851 811 24 326 974 16,7
Utah 2 233 204 2 736 424 22,5
Vermont 608 826 621 270 2,0
Virginia 7 079 025 7 769 089 9,7
Washington 5 894 143 6 549 224 11,1
West Virginia 1 808 345 1 814 468 0,3
Wisconsin 5 363 708 5 627 967 4,9
Wyoming 493 782 532 668 7,9
Do you need this or any other assignment done for you from scratch?
We have qualified writers to help you.
We assure you a quality paper that is 100% free from plagiarism and AI.
You can choose either format of your choice ( Apa, Mla, Havard, Chicago, or any other)

NB: We do not resell your papers. Upon ordering, we do an original paper exclusively for you.

NB: All your data is kept safe from the public.

Click Here To Order Now!