Estimating Population Size Calculator. Minimum Sample Size Required Calculator Estimating the Population Mean Instructions. You can use it to determine how many people you need to interview in order to get results that reflect the target population as precisely as needed.
Use this Confidence Interval Calculator to compute a confidence interval for the population mean mu in the case that the population standard deviation sigma is known. Sample Size Calculator for Estimating a Single Mean. Calculators Use this calculator to determine the appropriate sample size for estimating the proportion of your population that possesses a particular property eg.
They like your product they own a car or they can speak a second language to within a specified margin of error.
Choose the required confidence level from the dropdown menu Input the margin of error Input the proportion of the total population. Finally calculate the population proportion using the formula. Assesses the influence of changing input values. If you were taking a random sample of people across the US then your population size would be about 317 million.
