To put it simply, correlation indicates the relationship of one variable with the other. What it does not provide is a conclusive reason for why that connection exists in the first place. In this article, we will focus on the one we know best: questionnaires. It is comparatively difficult to calculate as its computation involves intricate algebraic methods of calculations. That is because there is no follow-up required with this type of research. 2. The scoring will not vary from time to time or from examiner to examiner. The numerical value of the correlation coefficient, rs, ranges between -1 and +1. Merits of Basic Education: Principally, this scheme seems very advantageous but in practice, this has been really inappropriate. Although the benefits of a correlational research study can be tremendous, it can also be expensive and time-consuming to achieve an outcome. Article Shared By. When the coefficient approaches -1.00, then this is the expected result. It offers a beneficial starting position for research. Since the variables being studied still aren’t under the control of the researchers, then it can reveal the presence of a relationship between them. Following are the advantages and disadvantage of Linear Regression: Advantages of Linear Regression 1. List of the Advantages of Globalization . 2. It is a simple and non-mathematical method of studying correlation between the variables. When a correlational research study begins to look at specific relationships or phenomena to see if connections are present, then the variables provide an excellent starting position to begin the review. 2. (iii) Values of extreme items do not affect this method. Statistical data is essential to the scientific method. A positive correlation shows that both variables increase or decrease simultaneously. 6. Prev Page; Next Page ; Related Topics . … It is very much likely to be misinterpreted particularly in case of homogeneous data. Related posts: Brief notes on primary and secondary data in statistics What is the difference between Primary and Secondary Data? The advantages are that you can preserve high-order features of the heterogeneity that cannot be described, thus preserved with classical geostatistical techniques based on low-order moments (mean and variance). ADVERTISEMENTS: 2. This method enables us in estimating the value of a dependent variable with reference to a particular value of an independent variable through regression equations. You use only a part of the universe for study and draw conclusions based on the sample for the entire universe. Most correlational research studies are found in the field of psychology. Merits and Demerits of Pearson’s method of studying correlation: ADVERTISEMENTS: Merits: 1. 1. What […] In comparison to the other methods, it takes much time to arrive at the results. Demerits 1. 2. Q1: What else about advantages and or disadvantages of multi-point statistics? Secondary data are those which are collected from published or unpublished sources. However, it is easy to misinterpret statistics and present deceptive analysis. Login / Register Owing to Covid-19 pandemic all physical classroom sessions in AIG are cancelled for 1 week. Here you can publish your research papers, essays, letters, stories, poetries, biographies and allied information with a single vision to liberate knowledge. 2. It is very much affected by the values of the extreme items. There are both advantages and disadvantages of data collection methods in statistics. This advantage creates the possibility of discovering new relationships existing between phenomena that don’t seem to have existing connections. It is also the reason why it can be a popular way to look at specific data points. Going back to the example of the child and the ice cream truck, the presence of heavy winds might make it seem like the vehicle is closer or further away than it actually is. For example, in the stock market, if we want to measure how two stocks are related to each other, Pearson r correlation is used to measure the degree of relationship between the two. Merits of Karl Pearson’s Correlation Method: 1. In certain types of problems like quality control, weather forecasts, share price analysis, etc., range is most widely used. 3. Value varies between +1 and –1. 2. Instead of getting data from 5000 farmers, we get it from 50-100 only. It facilitates comparison of two or more data sets. These figures create three potential definition outcomes for the work being performed. The value of the coefficient is affected by the presence of extreme values. They can get found in other organizations or companies, such as census data, institutional statistics, government studies, organizations and associations, research and data disseminated in periodicals, in books, on the internet or, for example, the same digital data. 1. Hence correlation with qualitative data such as honesty, beauty can be found. Merits of Mode : The mode or modal value of a distribution is that value of the variable for which the frequency is maximum.The number which is repeated maximum number of times is the mode. The politicians & their supports are immensely interested in knowing their prospects of winning election by sampling few voters prior to election. Demerits of Karl Pearson’s Correlation Method: 1. It is very much affected by the extreme items. We need to calculate the sample size needed to perform a RCT. Correlation studies the relationship between tow variables in which change in the value of one variable causes change in the other variable. 4. It is an affordable study method. It is easy to calculate. Qualitative or Quantitative. Merits of Median : … It is simple to understand. Although it typically looks at two variables it to find if there is a very simple of. 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