Sample size and its importance in research
The sample size for a study needs to be estimated at the time the study is proposed; too large a sample is unnecessary and unethical, and too small a sample is unscientific and also unethical. The necessary sample size can be calculated, using statistical software, based on certain assumptions. If n...
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| Format: | Article |
| Language: | English |
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SAGE Publishing
2020-01-01
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| Series: | Indian Journal of Psychological Medicine |
| Subjects: | |
| Online Access: | http://www.ijpm.info/article.asp?issn=0253-7176;year=2020;volume=42;issue=1;spage=102;epage=103;aulast=Andrade |
| _version_ | 1823935981423689728 |
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| author | Chittaranjan Andrade |
| author_facet | Chittaranjan Andrade |
| author_sort | Chittaranjan Andrade |
| collection | DOAJ |
| description | The sample size for a study needs to be estimated at the time the study is proposed; too large a sample is unnecessary and unethical, and too small a sample is unscientific and also unethical. The necessary sample size can be calculated, using statistical software, based on certain assumptions. If no assumptions can be made, then an arbitrary sample size is set for a pilot study. This article discusses sample size and how it relates to matters such as ethics, statistical power, the primary and secondary hypotheses in a study, and findings from larger vs. smaller samples. |
| first_indexed | 2024-12-16T22:44:30Z |
| format | Article |
| id | doaj.art-444a9d6b6a2a495b93aae2fac91c9233 |
| institution | Directory Open Access Journal |
| issn | 0253-7176 |
| language | English |
| last_indexed | 2024-12-16T22:44:30Z |
| publishDate | 2020-01-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Indian Journal of Psychological Medicine |
| spelling | doaj.art-444a9d6b6a2a495b93aae2fac91c92332022-12-21T22:13:17ZengSAGE PublishingIndian Journal of Psychological Medicine0253-71762020-01-0142110210310.4103/IJPSYM.IJPSYM_504_19Sample size and its importance in researchChittaranjan AndradeThe sample size for a study needs to be estimated at the time the study is proposed; too large a sample is unnecessary and unethical, and too small a sample is unscientific and also unethical. The necessary sample size can be calculated, using statistical software, based on certain assumptions. If no assumptions can be made, then an arbitrary sample size is set for a pilot study. This article discusses sample size and how it relates to matters such as ethics, statistical power, the primary and secondary hypotheses in a study, and findings from larger vs. smaller samples.http://www.ijpm.info/article.asp?issn=0253-7176;year=2020;volume=42;issue=1;spage=102;epage=103;aulast=Andradeethicsprimary hypothesisresearch methodologysample sizesecondary hypothesisizestatistical power |
| spellingShingle | Chittaranjan Andrade Sample size and its importance in research Indian Journal of Psychological Medicine ethics primary hypothesis research methodology sample size secondary hypothesisize statistical power |
| title | Sample size and its importance in research |
| title_full | Sample size and its importance in research |
| title_fullStr | Sample size and its importance in research |
| title_full_unstemmed | Sample size and its importance in research |
| title_short | Sample size and its importance in research |
| title_sort | sample size and its importance in research |
| topic | ethics primary hypothesis research methodology sample size secondary hypothesisize statistical power |
| url | http://www.ijpm.info/article.asp?issn=0253-7176;year=2020;volume=42;issue=1;spage=102;epage=103;aulast=Andrade |
| work_keys_str_mv | AT chittaranjanandrade samplesizeanditsimportanceinresearch |