Research Essay Example | Topics and Well Written Essays - 250 words

Research - Essay Example therefore the numbering of blue shirts sold against other colors would be annualized and just taken with the same equation for all in all other variables.. Median divides the sets of info in half and places half above the median and half infra the median while mode pertains to the score that occurs more frequently in a set of data. In each case an entire set of data can be summarized with a single value.There are also three main formulas for the measure of variability and they are Range, Variance and Standard Deviation. done these measures we can tell how much the data in each set varies. Range measures the distance surrounded by the highest and lowest values and gives us an idea of the width of our data set. This is popular although it does not show were the data is grouped in the set. The total amount of variability is taken into account with Variance. To assess the difference in data sets a stratum needs to be found to which each observation can be compared. As mean takes in every observation in its calculation it would be the best point of comparison. Standard Deviation calculates the square root of a variance. It gives a good measure of variance and shows the average distance each observation is from the