Normal Quantile-Quantile Plots
An introduction to normal quantile-quantile (QQ) plots (a graphical method for assessing whether a set of observations is approximately normally distributed). I discuss the motivation for the plot, the construction of the plot, then look at several examples. In the examples I look at what a normal quantile-quantile plot looks like when sampling from various other distributions. I then illustrate what normal QQ plots look like when sampling from a normal distribution by simulating several samples, for two different sample sizes.
Watch video Normal Quantile-Quantile Plots online without registration, duration hours minute second in high quality. This video was added by user jbstatistics 03 January 2013, don't forget to share it with your friends and acquaintances, it has been viewed on our site 238,863 once and liked it 2.8 thousand people.