Below is a frequency distribution from www.amazon.co.uk of 13 customer reviews of a CD called 'Some Loud Thunder' by an artist called Clap Your Hands Say Yeah (13 customer reviews)

-Using the data in the frequency distribution, what would be our estimate of the variance in the population?

Question

Below is a frequency distribution from www.amazon.co.uk of 13 customer reviews of a CD called 'Some Loud Thunder' by an artist called Clap Your Hands Say Yeah (13 customer reviews) 
 
-Using the data in the frequency distribution, what would be our estimate of the variance in the population?

Quizplus · Accepted Answer

The variance is calculated using the formula for variance in a frequency distribution, which involves finding the mean, then using the sum of squared deviations from the mean, weighted by their frequencies.

Below Is a Frequency Distribution from Www