Statistical Data Analysis Services

In every  research studies , the scientist wants to identify the truth or they wish to develop meaningful insights into the problem. In order to make any valid conclusion about the  research problem or hypothesis , we need valid evidence. Moreover, the evidence can be represented by  collecting data  (numeric or non-numeric in nature). In any  statistical analysis ,   data collection  is the fundamental step and there are two forms of data collection;  Primary and Secondary method  of data collection. I will describe you the meaning of primary data, examples of primary data collection and different ways of collecting the same. Primary Data: The researcher collected the Primary data through surveys, experiments, interviews, etc, and it is considered to be the  best research methodology   as the data are collected from the original source. However, before collecting the primary data, the main task of the researcher is to identif...

In this blog, I will explain to you how the  statistical analysis  is being applied for two independent samples. In practice, the test statistic used for comparing the two means from a population is by using the  t-test  because t-test shrinks the data to a single t-value and it is then compared with the significant value for the final conclusion. Now, let us understand the theoretical background in performing the t-test for two variables. Suppose X1 and X2 be the two independent random variables and let, be the sample with size n1 and n2 from a population with mean µ1, µ2 and variance σ12, σ22 respectively. Understanding the Problem Statement The primary or basic task in any  statistical data analysis  is to know or find out what the problem is and how the data is being measured. Construction of Test Hypotheses Once you understand the problem at hand, the next step is to frame an appropriate hypothesis to test for  statistical s...