isixsigma on MSN

Random Sampling: Key to Reducing Bias and Increasing Accuracy

Random sampling is a random means of gathering data points from all groups. It eliminates bias within your data sets by using ...
The Washington Post

Straight talk about polling: Probability sampling can be helpful but it’s no magic bullet

Mark Blumenthal and Natalie Jackson of Huffpost Pollster write: If you read polls in the news, you’re probably familiar with the term “margin of error.” What ...
JSTOR Daily

Ranked Set Sampling with Non-Random Selection of Sets and Errors in Ranking

Journal of the Royal Statistical Society. Series C (Applied Statistics), Vol. 36, No. 2 (1987), pp. 145-152 (8 pages) Ranked set sampling is a technique for estimating the mean of a population, of use ...
Investopedia

What Percentage of the Population Do You Need in a Representative Sample?

Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Somer G. Anderson is CPA, doctor of ...