Krejcie And Morgan 1970 Sample Size Formula

One of the most used method is the krejcie and morgan sampling method.

Krejcie and morgan 1970 sample size formula. Regrettably a table has not bee available for ready. Determining sample size for research activities robert v. Krejcie and morgan s sample size determination table population sample 10 10 15 14 20 19 25 24 30 28 35 32 40 36 45 40 50 44 55 48 60 52 65 56 70 59 75 63 80 66 85 70 90 73 95 76 100 80 110 86 source. Krejcie r v morgan d w.

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. D 2 n 1 x 2p 1 p 3 8412 800 x 0 5 1 0 5 0 052 800 1 3 84120 5 800 1 260 sampling method purposive sampling was used to choose the seven companies that were sampled in the study. However it is important for a researcher to consider whether the sample size is adequate to provide enough accuracy to base decisions on the findings with confidence. Published a formula for determining sample size.

These formulas for determining the sample size provide identical sample sizes in cases where the researcher adjusts the tabulated value based on the size of the population which should be less than or equal to 120. The ever increasing need for a representative statistical sample in empirical research has created the demand for an effective method of determining sample size. Estimation of sample size in was based on krejcie and morgan 1970 formula as below. Krejcie university of minnesota duluth daryle w.

Based on krejcie and morgan s 1970 table for determining sample size for a given population of 500 a sample size of 217 would be needed to represent a crosssection of the population. The tea processing factories were clustered in terms of departments units and in each. Determining sample size for research activities. Krejcie and morgan s 1970 developed the formulas for determining the sample size for categorical types of data.

Educational and psychological measurement 30 607 610. Sample size estimation using krejcie and morgan and cohen statistical power analysis. To address the existing gap krejcie morgan 1970 came up with a table for determining sample size for a given population for easy reference.