In a table is given the number of lcd television consumers have bought from a retail chain over five years. We are asked to estimate the average rate of lcd television sold by the retail chain between 2006 and 2008.
To estimate this average we will consider only the following three numbers
They correspond to the Tv's sold in 2006,2007 and 2008 respectively , we use the following formula for the average rate
Making the calculations we find that:
Looking at the options for this question, we found that the correct one is the option C