726 Words3 Pages

a. In statistics, a population is a collection of individuals, things, events, etc. The population is the topic that one wants to make inferences on, whereas a sample is a subset of the population that is being collected—to be studied. After the sample is studied in statistics, one draws an inference of the population. There are four general sampling methods used in statistics: representative sample, random sample and quasi-random sample, stratified and quota sample, convenience sample, and purposive sample. A representative sample should be unbiased and thus properly indicate a characteristic of the entire population. In a random sample nothing is biased; in other words, every individual, thing or event in the population has the same chance of being selected for the sample. Therefore, because of the randomness of the sampling, the selection of one item from the population in no way effects the selection of another item. A quasi-random sample is simply a number (nth), which is*…show more content…*

A population is labeled finite if the measurements—individuals, events, etc.—can be counted. In contrast, an infinite population cannot be counted. c. Descriptive statistics is a procedure of organizing sample data. This procedure allows readers to be able to understand and describe the data’s importance. Descriptive statistics allows an individual to quickly understand the data and make predict an individual score; however, descriptive statistics does not describe all data in the sample. Inferential statistics is a process that determines whether sample data accurately represented the relationship to the population. In other words, one uses inferential statistics to determine if the sample data is believable. d. A parameter is used in inferential statistics and is used to describe the scores of a population—letters of the Greek alphabet symbolizes a parameter. An estimate in statistics is a value, which was produced by the sample, and inferred to be the value of the

A population is labeled finite if the measurements—individuals, events, etc.—can be counted. In contrast, an infinite population cannot be counted. c. Descriptive statistics is a procedure of organizing sample data. This procedure allows readers to be able to understand and describe the data’s importance. Descriptive statistics allows an individual to quickly understand the data and make predict an individual score; however, descriptive statistics does not describe all data in the sample. Inferential statistics is a process that determines whether sample data accurately represented the relationship to the population. In other words, one uses inferential statistics to determine if the sample data is believable. d. A parameter is used in inferential statistics and is used to describe the scores of a population—letters of the Greek alphabet symbolizes a parameter. An estimate in statistics is a value, which was produced by the sample, and inferred to be the value of the

Related

## Using Quota Sampling And Non Probability Sampling Method

1169 Words | 5 Pagespractice proper sampling methods to conduct effective researches. Therefore, when designing a study to measure public opinion regarding police use of force, using quota sampling would be the logical choice to use for this study. Referring back to class discussion, this non-probability sampling method, in particular, takes on people to divide them into groups in order to fill in quotas. One of the reasons why a researcher would choose quota sampling is that it allows that person to sample a smaller group

## Sampling Methods

1031 Words | 5 PagesSampling Methods A great deal of sociological research makes use of sampling. This is a technique aiming to reduce the number of respondents in a piece of research, whilst retaining - as accurately as possible - the characteristics of the whole group. The purpose of taking a sample is to investigate features of the population in greater detail than could be done if the total population was used, and to draw inferences about this population. In addition, at the practical level, a sample

## Methodology: Quantitative Research Method, Delivery, And Deliveryer And Collection Methods

810 Words | 4 Pages3.0 Methodology In metrology will discuss the main method that apply in this research report, which is quantitative research method and delivery and collection method. The questionnaire design and sampling method will be explain and discuss in metrology part. 3.1 Quantitative Research Method According to (John W. Creswell 2003 and Gunderson 2000) giving a very clear definition that quantitative research method is the type of research by using collecting numerical data to explaining the particular

## Sampling

595 Words | 3 PagesSampling Carrying out a survey of every single potential consumer (known as population) of a firm's product would be impractical, time-consuming and costly. Businesses still, however, need to collect enough primary data to have a clear idea of the views of consumers. This can be done by taking a sample of the population. This sample group should be made up of consumers that are representative of all potential buyers of the product. There are a number of ways in which a sample can be chosen

## Essay On Sampling In Research

3005 Words | 13 Pagespreparation. Hence, the key to making good sampling choices is preparation. Trochim (2008) defines sampling as the drawing of a sample (a subset) from a population (the full set). In our everyday lives we all draw samples without realising it. For instance, when one decides to taste some unfamiliar food or drink that is some form of sampling. Williams (2003 74) posits that “Sampling is a search for typicality). On the other hand, (Clark: 2006 87) defines sampling as “a process of drawing a number of individual

## What Are The Advantages And Disadvantages Of Sampling Method

1065 Words | 5 Pagesmethod called sampling to understand the characteristics of people and events. By studying part of a group, they gain insight into traits of the whole group. Criminal justice researchers use several sampling methods. Each of these methods has their ideal use as well as advantages and disadvantages. The Science of Sampling Sampling is the method scientists use to collect people, locations and other items to research. The outcome of sampling research is only as valid as the samples the researchers

## Descriptive Behavior

515 Words | 3 PagesThis chapter looks at descriptive research which involves identifying the characteristics of a phenomenon that is being observed. This type of research does not tamper with the state of the situation under investigation. This chapter describes observation studies, correlation research, development design and survey research which give information that can be summarized through statistical analyses. In observation study the following strategies should be used: Defining the behavior being studied carefully

## Comparative Stem and Leaf Diagram of Error Lines

792 Words | 4 PagesComparative Stem and Leaf Diagram of Error Lines Key: 0 4=0.4 cm Year 7: 0.4, 0.4, 0.6, 0.6, 0.6, 0.6, 0.9, 1.4 Year 11: 0.4, 0.6, 0.6, 0.6, 0.6, 0.9, 0.9, 1.6 Year7 Mode: 0.6 cm Median: 0.6 cm Lower quartile: 0.5 cm Upper quartile: 0.75 cm Interquartile range: 0.75-0.5=0.25 cm Semi-interquartile range: 0.25÷2=0.125 cm Year 11 Mode: 0.6 cm Median: 0.6 cm Lower quartile: 0.6 cm Upper quartile: 0.9 cm Interquartile range: 0.9-0.6=0.3 cm Semi-interquartile

## Qualitative And Quantitative Study

1230 Words | 5 PagesResearch Problem Determining the approaches used to protect the information systems of Business Organizations Qualitative and Quantitative research A qualitative study is an exploratory research that is used by a researcher to determine various research attributes like determining reasons, intangible impacts, and opinions on a given research problem(Bamberger, 2000). On the other hand, a quantitative study is a research path used by the researcher in identifying and determining the quantitative

## Conducting Surveys

873 Words | 4 Pagessurveyed, or a sample can be selected. A census survey gives you the most information and the most accurate picture of the population as a whole. When a population to be surveyed is small, census surveys are often recommended. When larger populations are considered, however, a census survey is sometimes not feasible because of cost and time constraints. When this is the case, there are several types of sampling that can be used to make inferences about the population you sample from. Simple

### Using Quota Sampling And Non Probability Sampling Method

1169 Words | 5 Pages### Sampling Methods

1031 Words | 5 Pages### Methodology: Quantitative Research Method, Delivery, And Deliveryer And Collection Methods

810 Words | 4 Pages### Sampling

595 Words | 3 Pages### Essay On Sampling In Research

3005 Words | 13 Pages### What Are The Advantages And Disadvantages Of Sampling Method

1065 Words | 5 Pages### Descriptive Behavior

515 Words | 3 Pages### Comparative Stem and Leaf Diagram of Error Lines

792 Words | 4 Pages### Qualitative And Quantitative Study

1230 Words | 5 Pages### Conducting Surveys

873 Words | 4 Pages