VARIABLES Qualitative vs Quantitative variables Qualitative variables are categorical items, whereas quantitative variables have a numerical value associated. Qualitative example: Blood group Quantitative example: Temperature   Discrete vs Continuous variables Quantitative variables can be split into discrete (counted to an exact figure) or continuous, which can’t be measured precisely so need to be rounded. Discrete Read More …

Method 1 – The longer route, with calculations explained   Firstly calculate the average (mean) of your values.       Then take the difference (variance) between each value and the mean.     Then square each variance.     Next, take the mean of the variances.     And finally, the square root of Read More …