A researcher divides his participant group of computer tablet users into three groups based on degree of use of the tablet. If the researcher then draws a random sample from each user group independently, they have created a _____ sample.
A. Randomized
B. Stratified
C. Snowball
D. Systematic
Answer: B
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The philosophical assumption that addresses the nature of reality is referred to as
a. epistemology. b. phenomenology. c. ontology. d. methodology.
Skilled writers assume that people will read every word in a message when it appears online
Indicate whether the statement is true or false
Henry Giroux believes the aim of education is to
a. engage students in social discourse that helps them reject human suffering and exploitation. b. promote a hierarchical social organization with postmodernism's rejection of metanarratives c. help students promote a better understanding of the language difficulties involved. d. provide students with the kinds of texts they need to solve problems.
What is the dependent variable?
An industrial psychologist tests three different keyboard designs for a new computer to determine which one produces optimal performance. Four computer operators are given text material and told to type it as fast as they can. They spend 3 minutes on each keyboard with a 10-minute rest between each keyboard. The number of errors committed are recorded. The researcher wants to know if there is a significant difference in errors among the three types of keyboards (called Keyboard A, Keyboard B, and Keyboard C). The one-way, repeated-measures ANOVA revealed that there was a significant difference in number of errors made based on the type of keyboard being used, F(2, 38) = 6.91, p = .003, ?p2 = 0.267. Bonferroni-corrected multiple comparisons revealed that more mistakes were made with Keyboard C (M = 6.00, SD = 2.18) than with Keyboard B (M = 4.00, SD = 2.05), p < .01. There was no difference between Keyboard A (M = 5.00, SD = 2.16) and Keyboard B, p = .59 or between Keyboard A and Keyboard C, p = .71.