Statistics is a statistical procedure concerned with the describing the characteristics and properties of a group of persons, places, or things.
Example: We may describe a collection of persons by stating how many are poor and how many are rich, how many are literate and how many are illiterate, how...
4. Data Collection and Sampling Techniques
5. Observational and Experimental Studies
6. Uses and Misuses of Statistics
1. Frequency Distributions and Graphs
2.1 Organizing Data
2.2 Presentation of Data
2. Data Description
3.1 Measures of Central...
UNIT I QT – Introduction – Measures of Central Tendency – Mean, Median, Mode. Mathematical Models – deterministic and probabilistic – simple business examples – OR and optimization models – Linear Programming – formulation – graphical solution –simplex – solution. UNIT II Transportation model – Initial Basic...
or measurements that are of interest to a decision maker 3) Descriptive Statistics: focused on summarizing and presenting information. - Examples: Pie chart or graph comparing populations of different provinces, table comparing the amounts of ozone over North America over a series of years or a world...
is undertaken to provide answers to questions of who, what, where, when, and how – but not why. For example, it describes | |
|users of a product, determines the proportion of the population that uses a product, or predicts future demand for a product or describes the happening of a certain | |
Data published by the Office for National Statistics (‘government statistics’)
* Data published by the European Union.
1.3 Company Data
Examples of company data include personnel databases, internal communication such as memos and e-mails, minutes of meetings, and the company website.
reach my target audience? Is the question kept in mind?
It helps to allocate the advertising funds to the right products in the right media: for example, ads for chocolates will be placed in a slot where there is maximum children viewer ship. And channels like Nickelodeon, Cartoon Network or between...
AIR (Average Issue Readership) AIR of any publication is the number of people who claim to have read the publication within a time period equal to the periodicity of the publication preceding the day of interview. Frequency of Issue Quarterlies Bi-monthlies Monthlies Fortnightlies Weeklies Bi-Weeklies...
capabilities to surveys via the Internet, Personal Digital Assistants (PDAs), scanning and telephone interviewing. You will find direct references to the use of SNAP in Chapter 10 (Survey and quantitative observation techniques), Chapter 13 (Questionnaire design), Chapter 17 (Data preparation) and Chapter...
about reaching general conclusions from limited data.
Statistics is not intuitive.
The word ‘intuitive’ has two meanings. One meaning is “easy to use and understand.” That was my goal when I wrote Intuitive Biostatistics. The other meaning of 'intuitive' is “instinctive, or acting on what one feels...
Installing the Inferential Statistics and Distribution Features
In all that follows, except possibly for random numbers, use the Stats/List Editor Flash Application.
You will need to acquire this either from the internet using graphlink or from another TI-89 that has it
us maintain a consistent style. Lauren McCann, a graduate student at M.I.T.
and intern at Data Miners, prepared the census data used in some examples
and created some of the illustrations.
We would also like to acknowledge all of the people we have worked with
in scores of data mining engagements...
population, household population, household size, number of income receivers and monthly household income. These factors are varied according to the district and the market segment which was selected by the entrepreneur may be wrong according the above factors. As an example if the entrepreneur selects Gampaha...
Total Population Proportion Determining the Sample Size
22.5 STRATIFIED SIMPLE RANDOM SAMPLING Population Mean Population Total Population Proportion Determining the Sample Size 22.6 CLUSTER SAMPLING Population Mean Population Total Population Proportion Determining the Sample Size 22.7 SYSTEMATIC SAMPLING
* Chapters 2 and 3 used “descriptive statistics when summarizing data using tools (such as graphs), and statistics (such as mean and standard deviation)
* Methods of inferential statistics use sample data to make an inference or conclusion about a population
* Two main activities of inferential...
Wk1 reading notes
population - a set of units (usually people, objects, transactions, or events) that
we are interested in studying.
all employed workers in the United States
all registered voters in California
everyone who has purchased a particular brand of cellular telephone
Summary of ‘Graphical Excellence and Integrity’
A well-designed graphs and tables help us know better about the information of products. By contrast, the inappropriate and presentation of information can mislead the readers. The ‘Graphical Excellence and Integrity’ provide us with information which...
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organizing, presenting, analyzing,
and interpreting numerical data for
the purpose of assisting in making a
more effective decision.
• Statistical techniques are used
extensively by marketing,
accounting, quality control,
consumers, professional sports