A Visual Approach to SPSS for Windows 2nd Edition by Leonard Stern

تمرين 6

Note: The data files named in these exercises are available at the publisher's website for this text, http://www.pearsonhighered.com/stern2e.
Reaction time data tend to be positively skewed. The data file ReadingTimes.sav contains the reading times of participants shown one of two versions of an instruction for a laboratory task, a standard form of the instructions (labeled control ) and a new form of the instructions (labeled new ). The reading time in tenths of a second is recorded in the variable time. Conduct a test to determine whether the distributions of reading times in the two instruction conditions differ. What is the effect size, A