Using SPSS with the data imported in Exercise 3.7, determine the percentage of times when the observer (myself) gave the wrong response by looking at the Accuracy variable. Plot and describe the distribution of reaction-time data. The next two exercises refer to a large data set in Appendix D. The data can also be downloaded from the Web at
https:www.uvm.edu/~dhowell/fundamentals8/DataFiles/Add.dat. These data come from a research study by Howell and Huessy (1985), which is described at the beginning of the appendix. We will refer to them throughout the book.