Free

# Statistics and Research - Speech or Presentation Example

Summary
Statistical significance implies how significantly probable are the conclusions being drawn, i.e., how high is the probability that the outcomes from a statistical test are unlikely to have occurred by chance. Practical significance implies how far a certain outcome is…

## Extract of sample "Statistics and Research"

Statistics and Research Two major causes of problems faced when drawing conclusions about a population from a sample are: Lack of knowledge about the research topic
Small sample size
2. Descriptive Statistics is used to describe the quantitative results or summary for a given data set.
On the other hand, inferential statistics is that which helps in drawing conclusions about a given data set.
3. Statistical significance implies how significantly probable are the conclusions being drawn, i.e., how high is the probability that the outcomes from a statistical test are unlikely to have occurred by chance. Practical significance implies how far a certain outcome is significant in the practical sense, after the consideration of all the costs associated with its realization.
4. William Edwards Deming was an American statistician who is mainly known for his works on industry quality control that could be used for enhancing industrial production.
His suggestions on industrial quality control were that an organization can increase industrial production effectively and reduce costs efficiently by adopting proper management principles in their business strategy. He developed a ratio that describes how the industrial quality control quotient can be increased, which is,
Quality = (Total Work Efforts) / Total Costs of production.
5. Reliability of data implies that the outcomes of the same tests being conducted on different samples of the same population would yield similar conclusions.
6. External validity of the data implies how far the issue under study has really been addressed while conducting researches. Internal validity on the other hand could be found by judging a sub-sample out of the sample being considered to see if the conclusions drawn from it coincide with that of the larger sample.
7. A statistic is the outcome of a test being conducted on a given sample. A parameter on the other hand, is a variable that describes a certain characteristic of a given sample or a population.
8. In this particular study, (a) the population comprises of all the U.S. residents aged 18 years and above, and (b) the sample is the 2100 people being chosen out of the lot.
9. A range comprises of a lower and an upper limit within which a certain value is supposed to lie, with a high degree of probability.
10. Frequency distributions determine the weights that must be assigned to a certain value which makes it a very important factor in statistics.
11. The maximum value that relative frequency can take is 1.
12. Relative frequency distribution is the proportion of times that a variable is taking a particular value in different trials. On the other hand, the cumulative frequency is the additional frequency to the total frequency that a value assigns.
13. 5 ways to graphically represent data are -
(i) Scatter Diagram (ii) Line diagram (iii) Bar Diagram (iv) Pie Chart (v) Column Graph.
14. Quantitative data implies that which could be quantitatively measured and qualitative data is the opposite of the former, e.g., logical results.
15. An outlier is a data point that lies outside the average positions of its counterparts and so is often responsible for the occurrence of an outcome completely different from expected or reality.
16. A stem and leaf plot is a way of graphically representing the data such that the underlying distribution becomes prominent from the arrangements of the values.
17. To report the performance of a standardized test, the various outcomes are categorized into a number of classes and then are ranked accordingly.
18. C75 implies centile 75, meaning that the particular value lies 25% below the highest value. Median = centile 50.
19. (a) the mean is a parameter. (b) statistic. (c) statistic. (d) statistic.
20. (a) continuous (b) discrete (c) discrete (d) continuous.
21. (a) Ordinal. (b) Interval. (c) Nominal Scale. (d) Cardinal measure.
22. Class Frequency
61 – 63 2
64 – 66 1
67 – 69 0
70 – 72 6
73 – 75 0
76 – 78 0
79 – 81 7
82 – 84 0
85 – 87 7
88 – 90 0
91 – 92 1
23. Numbers Rank
92 1
86 2
85 3
79 4
72 5
65 6
Cite this document
• APA
• MLA
• CHICAGO
(“Statistics and Research Speech or Presentation Example | Topics and Well Written Essays - 500 words”, n.d.)
(Statistics and Research Speech or Presentation Example | Topics and Well Written Essays - 500 Words)
https://studentshare.org/miscellaneous/1557507-statistics-and-research.
“Statistics and Research Speech or Presentation Example | Topics and Well Written Essays - 500 Words”, n.d. https://studentshare.org/miscellaneous/1557507-statistics-and-research.
Click to create a comment or rate a document

## CHECK THESE SAMPLES OF Statistics and Research

### Statistics Research Paper

...? Statistics Research Paper of the of Statistics Research Paper Introduction The eating habits of people round the globe have contributed to the increased obesity rates, Americans being at the top. Apart from previous studies that have concentrated on the impact of public policy on consumption in terms of calorie, the principal objective of this study is to discover the associations between prices of food prices and income on weight of body. Although the economic ‘Law of Demand’ proposes that an increase in price will lead to decline in the consumption of that good. Nevertheless, it is not inevitably the case that increasing the price will also slump the weight when...
10 Pages(2500 words)Research Paper

### Factor Analysis: Statistics Research

..., it is possible; the variations between three or four observed variables may be reflected the in fewer unobserved variables and this may act as an example. Factor analysis looks for the common variations in response to unobserved dormant variables (Kim & Mueller, 1978).  The experimental variables are demonstrated as linear arrangements of the possible factors, plus "error" terms. The statistics added to the interdependencies among the experimental variables can be used later to decrease the group of variables in a dataset. This technique is equal to low rank estimate of the matrix of observed variables. Factor analysis comes from psychometrics, and is normally applied in behavioral & social sciences, product...
11 Pages(2750 words)Research Paper

### Level 3 Research Statistics

...? Assignment Responses Experimental hypothesis Alcohol consumption is inversely related to competent driving. 2. Null hypothesis Alcohol consumption is not related to competent driving. 3. Aim To examine the relationship (if any) that consumption of alcohol has with competent driving. 4. Sources of information Printed information Oral information Electronic information Research journals WHO literature Pamphlets issued by the Police Pamphlets issued by the Driving Law enforcement authorities Interviews with the regulatory authorities Interviews with the police Interviews with doctors Interviews with individuals who have attempted to drive after consuming alcohol. Online journal articles Websites of the regulatory bodies...
5 Pages(1250 words)Assignment

### Statistics Research Paper

...? Research project Statistics research paper Effects of Hours Spent on Facebook on GPA Introduction This research seeks to investigate to what extentsocial media influences academic performance. To achieve this broad aim this study focuses on how hours spent on the popular media site, Facebook, affects a person’s GPA. The growing importance of social media in modern society calls for greater investigation into the depth and extent of impact the use of the media impacts on the way people behave with regard to other activities in their lives. Over the last few years, the debate on the impact of social media has grown in magnitude. A considerable number of studies have...
5 Pages(1250 words)Research Paper

### Research, Statistics, and Psychology

...? Legal Education Research, Psychology And Statistics Research and statistics are widely used in every field for proving the validation of theories. In psychology too there is a massive use of research and statistics to verify the accuracy of a hypothesis and declare it a theory. Research and statistics plays important role in psychology and provides a structural format for researcher to solve or identify the significant problems of today’s world. A research starts with the identification of a problem followed by the collection of data or statistics...
3 Pages(750 words)Essay

### Research, Statistics, and Psychology

...? Research, Statistics and Psychology Research, Statistics and Psychology Statistics can be well-defined as the study of the gathering, analysis, explanation, society as well as the presentation of data. Statistics deals with all features of data, with the planning of data gathering in terms of the design of review as well as experimentations. In the field of scientific discipline, statistics is said to be singular, it is rather art. Due to its experiential roots as well as its stress on requests, it is typically considered as a mathematical science somewhat as a branch of mathematics. On the other hand, psychology is defined as an academic as well as applied punishment that includes the scientific study of intellectual purposes... and...
3 Pages(750 words)Essay

### Research and statistics

...____________________________________________________________________ ____________________________________________________________________ ____________________________________________________________________ ____________________________________________________________________ ____________________________________________________________________ ____________________________________________________________________ ____________________________________________________________________ ____________________________________________________________________ ____________________________________________________________________ ____________________________________________________________________ A recent investigation focus has been...
6 Pages(1500 words)Essay

### Research method and statistics

...in the study do not prove it. Furthermore, the research work looks unable to mention the relationship between engagement levels and the therapeutic environment. As it is an elementary concept, it must have been interpreted while stating the hypothesis and conducing the research. Thus, it is a significant flaw in the whole research work. In addition, the researchers do not specify at all regarding the statistical instrument, which had been exercised in the study while collecting the data. It is really amazing why the authors do not feel the need of describing the basic requirements in respect of instrument selection. Furthermore, the...
8 Pages(2000 words)Essay

### Usability of a Business Statistics and Research Course in the Field of Information Technology Project Management

...Usability of a business statistics and research in the field of information technology management Industrial applications require interdependence among academic professions in order to integrate different skills in processes. This paper seeks to discuss applicability of business statistics and research in the field of information technology management. Academic fields can be integrated if they complement each other or if they are dependent. Exploration of applicability of business statistics and research in information technology management therefore entails the scope of the two and the ways in which the two professions relate. While...
1 Pages(250 words)Essay

### Research Statistics Question

...Essay: Application statistics Basic biostatistics usually is utilised by the government’s Department of Health and HumanServices as well as the U.S Department of Agriculture to emphasize on the importance of eating in a healthy manner and what foods to avoid eating so as not to get infected by foodborne disease. Basically, the biostatistics released is also useful in helping public health surveillance which is an ongoing process and assists in prevention and controlling of possible foodborne disease as well as injury. Epidemiology on the other hand is a primary science concerned with public health and is a quantitative field which deals with working knowledge of statistics probability and other sound researching techniques. Thus... ...