Mean all formulas and concepts.
Arithmetic mean In statistics we use arithmetic mean before learning that see the fundamentals of statestics to understand this concept easily. Here are the set of formulas to solve the measures of central tendency Individual series If the data is given in individual series we should use ∑ x x̅=------ ⇒∑x = nx̅. n Where n is no. Of observations given in data If the values are in AP then x̅= (a+l)/2 For Ex:- what is the mean of first 10 multiples of 8 Sol:- a is first multiple that is 8 l is last multiple that is 80 Now, mean =(a+l)/2. = (8+80)/2. = 88/2 = 44. If they asked assumed mean for individual series we have to assume, that means select a number of your wish from the given data and subtract that assumed number from every number in the data. This...