Quality control charts, The statistical Quality Control chart is used to assess the product’s quality. Every product is made for a specific reason; if it fulfills that goal completely, it is considered good quality;...
What is mean by the correlation coefficient, To obtain a measure of the relation between X and Y independent of units of measurements. Karl Pearson in 1890 developed a measure of relationship and it’s...
Regression Analysis is used for finding out the relationship between a dependent variable and one or more than one independent variable. The functional relationship between the dependent variable & independent variable is called the...
What are the Nonparametric tests?. Why we need nonparametric statistical analysis? Parametric statistical methods are based on particular assumptions about the population in which the samples have been drawn. Particularly probability distribution, observation accuracy,...
Why we need a null hypothesis test?. Hypothesis testing is an important stage in statistics. The test evaluates two mutually exclusive statements about a population to determine which statement is better supported by the...