What is slovin formula and its use?
What is slovin formula and its use?
– is used to calculate the sample size (n) given the population size (N) and a margin of error (e). – it’s a random sampling technique formula to estimate sampling size. -It is computed as n = N / (1+Ne2).
What is Yamane formula?
The Taro Yamane method for sample size calculation was formulated by the statistician Tara Yamane in 1967 to determine the sample size from a given population. Below is the mathematical illustration for the Taro Yamane method: n= N/ (1+N (e) 2)
What is the Cochran formula?
The Cochran formula allows you to calculate an ideal sample size given a desired level of precision, desired confidence level, and the estimated proportion of the attribute present in the population. Cochran’s formula is considered especially appropriate in situations with large populations.
Who invented Slovin’s formula?
The formula (sometimes written as Sloven’s formula) was formulated by Slovin in 1960. The error tolerance, e, can be given to you (for example, in a question). If you’re a researcher you might want to figure out your own error tolerance; Just subtract your confidence level from 1.
Why is Yamane formula used?
A Simplified Formula For Proportions Yamane (1967:886) provides a simplified formula to calculate sample sizes. This formula was used to calculate the sample sizes in Tables 2 and 3 and is shown below. A 95% confidence level and P = .
What is Krejcie and Morgan?
Krejcie & Morgan (1970) came up with a table for determining sample size for a given. population for easy reference (see Table 1). The Table is constructed using the following formula for determining sample size. But there is no need of using the formula since the table of determining sample size has all the.
Is Cochran formula reliable?
Cochran Formula (Cochran, 1977) – Reliability level 95% or significance level 0.05; = 1.96 – Reliability level 99% or significance level 0.01; = 2.58 3.2 If the population size is unknown, the population proportion is unknown.
Which is better slovin or Cochran?
Cochran formula is use for large population that are heterogeneous in nature, but slovin’s formula is better for population which little or nothing is known. All groups are heterogeneous – that’s why we need statistics.