Practical no. 5 Spearman's Rank correlation coefficient. Correlation In previous blog we discussed about the measure central tendency and Dispersion to use to study the variable. the correlation is a statistical concept that allows us to measure and understand the relationship between two or more variables. it provided a valuable information about that variables. e.g. price and demand of commodity, income and expenditure of family, height and weight of group of persons. their we use the relation between this two variables. in above examples we see the one variable increases other variable is also changes in same or opposite direction. definition: Correlation is statistical tool which study the relationship between two or more variables. for analysis of correlation various method and techniques are used. example: i. Demand and supply of product ...