Krejcie And Morgan Sample Size Determination Table
Sample size table from the research.
Krejcie and morgan sample size determination table. The krejcie and morgan table help the researcher to determine the sample size. Krejcie robert v morgan daryle w in educational and psychological measurement. N the population size. The krejcie and morgan s sample size calculation was based on p 0 05 where the probability of committing type i error is less than 5 orp 0 05.
10 10 220 140 1200 291 15 14 230 144 1300 297 20 19 240 148 1400 302 25 24 250 152 1500 306. Determining sample size for research activities. Concise table of three place probabilities of the symmetric binomial cumulative distribution fo. To simplify the process of determining the sample size for a finite population krejcie morgan 1970 came up with a table using sample size formula for finite population.
To address the existing gap krejcie morgan 1970 came up with a table for determining sample size for a given population for easy reference. As for example if the population have 2800 person by referring to the table researcher just need to get a feedback from 338 person. The ever increasing need for a representative statistical sample in empirical research has created the demand for an effective method of determining sample size. Sample size estimation using krejcie and morgan and cohen statistical power analysis.
Microsoft word krejcie doc author. So the researcher does not need to make the study on each of the sample. Table for determining sample size from a given population n s n s n s. Sample size determination using krejcie and morgan table.
P the population proportion assumed to be 0 50 since this would provide the maximum sample size. Krejcie and daryle w. Tables for determining the sufficient sample size were given as adapted from krejcie and morgan 1970 and bartlett et al 2001. Educational and psychological measurement 1970 30.
One of the most used method is the krejcie and morgan sampling method. This formula is the one used by krejcie morgan in their 1970 article determining sample size for research activities educational and psychological measurement 30 pp. Determining sample size for research activities.