Statistics

Weighted Mean – Formula and Examples

Here you will learn what is weighted mean formula and how to calculate weighted mean with examples. Let’s begin – Weighted Mean Formula If \(w_1\), \(w_2\), ……\(w_n\) are the weights assigned to the values \(x_1\), \(x_2\), …..\(x_n\) respectively then their weighted mean is defined as Weighted mean = \(w_1x_1 + w_2x_2 +……+ w_nx_n\over {w_1 +…….+ …

Weighted Mean – Formula and Examples Read More »

Mean Deviation About Mean and Median – Formula and Examples

Here you will learn what is the mean deviation formula with examples. Let’s begin –  Mean Deviation Formula (i) For Ungrouped distribution : Definition : If \(x_1\), \(x_2\), ….. , \(x_n\) are n values of a variable X, then the mean deviation from an average A (median or arithmetic mean) is given by Mean Deviation …

Mean Deviation About Mean and Median – Formula and Examples Read More »

What are Measures of Dispersion Statistics ?

Here, you will learn what are the measures of dispersion in statistics i.e. range, mean deviation, variance and standard deviation with example. Let’s begin – Measures of Dispersion : The dispersion of a statistical distribution is the measure of deviation of its values about the their average(central) value. It gives an idea of scatteredness of …

What are Measures of Dispersion Statistics ? Read More »