pilot study

[amisha...@gmail.com]

Respected Sir and group members

Is there any thumb rule for deciding the sample size for pilot survey, like 'x' times the no. of statements ... please provide some literature support also if possible.

Regards

Iesha

[Dr. Rudra Rameshwar]

Dear Lesha,

Read below observation in order to address your query:

According to Connelly (2008), extant literature suggests that a pilot study sample should be 10% of the sample projected for the larger parent study. 

However, Hertzog (2008) cautions that; this is not a simple or straight forward issue to resolve because these types of studies are influenced by many factors. 

Nevertheless, Isaac and Michael (1995) suggested 10 – 30 participants; Hill (1998) suggested 10 to 30 participants for pilots in survey research; Julious (2005) in the medical field, and van Belle (2002) suggested 12; Treece and Treece (1982) suggested 10% of the project sample size. 

I would say that 10 would be a minimum, and 30 might be considered in your project sample size is expected to be 300.

Other supporting references can be a good option to know more about Pilot survey and samples.

Connelly, L. M. (2008). Pilot studies. Medsurg Nursing, 17(6), 411-2.

Hertzog, M.A. (2008). Considerations in determining sample size for pilot studies. Research in Nursing & Health, 31,180-191.

Hill, R. (1998). What sample size is “enough” in internet survey research? Interpersonal Computing and Technology: An Electronic Journal for the 21st Century, 6(3-4).

Isaac, S., & Michael, W. B. (1995). Handbook in research and evaluation. San Diego, CA: Educational and Industrial Testing Services.

Julious, S. A. (2005). Sample size of 12 per group rule of thumb for a pilot study. Pharmaceutical Statistics, 4, 287-291.

Treece, E. W., & Treece, J. W. (1982). Elements of research in nursing (3rd ed.). St. Louis, MO:Mosby. van Belle, G. (2002). Statistical rules of thumb. New York: John Wiley.

Best wishes,

RR

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[amisha...@gmail.com]

thanku so much respected Prof. Rameshwar..

can u plz elaborate for consumer ased study for infinite population.. 4 cities considered and no. of statements is also quite large (150 approx).. shud we consider 10 times the no. of statements.?? or shud we go by there is sm formula as per which approx 400 comes out to be the sample size (1200 for 4 cities in this case)

regards

iesha

[amisha...@gmail.com]

Neeraj Sir.. plz help in this regard.. need certain gud references also.. consumer based study.. infinite population.. sample size for pilot study

Regards

Iesha