If you decide to conduct a case study, you will need to know about how the sample is formed. The data sample is the aggregate of the responses received from all the respondents who took part in the study.
Necessary
respondents
Instructions
Step 1
It should be noted right away that any sample has two characteristics - quantitative and qualitative.
Step 2
The qualitative characteristic reflects the significant variables that characterize the respondents. For example, age, gender, nationality, profession - can qualitatively reflect the sample.
Step 3
In order for the conclusions drawn from the results of the sample to be considered reliable and extended to all people similar in significant variables (all students of the same school, all women in the country), the sample must meet the requirements of representativeness. That is, to include the most diverse representatives of the society we are studying.
Step 4
The quantitative characteristic of the sample is its size, those people who took part in the study. Depending on the scope of the study and the method of data processing you have chosen (primary data processing or secondary data processing using mathematical statistical criteria and methods).
Step 5
The minimum number of respondents, based on the opinions and data of which it is possible to draw scientific conclusions, is 25-30 people. But, of course, this will not be enough for serious work (master's, dissertation). In addition, you need two equal samples if you want to compare groups in terms of the level of a trait obtained empirically.
Step 6
Also, only one sample can take part in the study, and its results will be compared before and after the presentation of a significant stimulus. For example, the level of stress resistance of athletes before and after psychological training with them.
Step 7
Let us also admit the case when the experimental results of the sample are compared with the theoretical norms taken from the literature.
Step 8
You can also compare your sample with the control group - the level of stress resistance of athletes with whom a psychologist worked and a similar indicator for athletes without psychological support.
