The normal distribution is a continuous probability distribution that is symmetrical, bell-shaped, and centred around its mean. It is one of the most important distributions in statistics because many ...

Over the last few decades, Lean Six Sigma has become an integral part of the world of business. It is one of the most ...

Normal distribution, also known as Gaussian distribution, is a fundamental concept in statistics that is used to describe the probability distribution of a continuous random variable. In simple terms, ...

The empirical rule describes how points are clustered in a normally-distributed data set. It states that 95% of data fall ...

The diameters of 50 steel rods are measured and saved as values of the variable DISTANCE in the following data set: * data measures; input diameter @@; label diameter='Diameter in mm'; datalines; ...

SAS/INSIGHT software provides tests for the null hypothesis that the input data values are a random sample from a normal distribution. These test statistics include the Shapiro-Wilk statistic (W) and ...

If the probability that a randomly selected person will vote in the next election is 0.39, how would we find the probability that more than half of the people in a sample of 1000 will vote? Since the ...

Abstract: Evaluation of probability distribution functions and their inverse functions play a central role in finding a critical value or threshold for a statistical inference and analysis. A ...