Project

Some scenarios adapted from Gravetter, F.J. & Wallnau, L.B. (1996). Statistics for the behavioral sciences (4th ed.). St. Paul, MN: West Publishing.

2. Craik and Tulving (1975) gave subjects a list of words to remember. Each word was presented in the context of a sentence. Subjects in the experiment saw two different types of sentences: simple sentences and complex sentences. Below are hypothetical results from their experiment (dependent variable = number of words recalled at a later memory test). Note: obtained statistic = 1.62

subject simple sentences complex sentences

A 14 22 B 15 17 C 19 23 D 13 19 E 17 28 F 15 20

Use the 0.05 level of significance with one tail. Don’t create a graph for this one. A. Test and why it’s used. B. Concluding paragraph with APA statistical report and explanation. C. Graph D. Questions. 1. What type of statistical test would be used if, rather than measuring the number of words recalled under those two conditions, the experimenters measured two things: how many simple sentences participants could write in a 10-minute period, and how many complex sentences (out of 30) participants correctly comprehended? 2. What kind of error might you have made, and what is the probability you made it? (don’t need to explain the second part)