www.psychexamreview.com<br /><br />In this video I describe the 4 scales of measurement proposed by Stanley Smith Stevens, which have become the standard way of defining types of data. These include nominal, ordinal, interval, and ratio. I discuss the defining features of each, provide a few examples in psychological research, and mention the descriptive statistics that can be applied for each type. I also explain the distinction between continuous and discrete variables that can be used when discussing interval or ratio data.<br /><br />You can find the original 1946 paper by Stevens here: <a href="https://www.fpce.uc.pt/niips/novoplano/mip1/mip1_201314/scales/Stevens_1946.pdf" target="_blank" rel="nofollow">https://www.fpce.uc.pt/niips/novoplano/mip1/mip1_201314/scales/Stevens_1946.pdf</a><br />...<br /><a href="https://www.youtube.com/watch?v=62tPLQPg9-8" target="_blank" rel="nofollow">https://www.youtube.com/watch?v=62tPLQPg9-8</a>