Yes, it is still appropriate in doctoral studies. The Research Methods for Business: A Skill-building Approach (Edition 8) by Bougie and Sekaran, which is published in 2020 has the population to sample size table referring to Krejcie and Morgan (1970).
Sidra Salam It can be one of the references for your sample size, however, I believe your sample size also needs to be supported by power analysis other than Morgan table.
Hi Sidra. I think we still can use the Kriejie Morgan Table of Sampling. In my field town planning research..many of the researchers still using this table. I'm graduated my PhD with minor correction in 2019 & I used this table to justify my sample size.
A big YES. Kriejie is similar to the latest online survey calculators of sample size computation. We still don't have a better option since 1970. Not different from the p-value 's level of significance of 0.05 that was proposed by Fisher in 1924. There is still no better option to it. We need statisticians to review these techniques
A big YES. Kriejie is similar to the latest online survey calculators of sample size computation. We still don't have a better option since 1970. Not different from the p-value 's level of significance of 0.05 that was proposed by Fisher in 1924. There is still no better option to it. We need statisticians to review these techniques