INTRUCTIONS FOR WRITER:
1) Please highlight the correct answer
2) Please type in the answer as needed.
ASSIGNMENT
SECTION 9
3) How many subjects participated in an independent-samples t-test if a researcher reports t(20) = 3.68?
SECTION 10
3) A linear regression procedure should ultimately yield a value called
• the slope.
• rho.
• Y prime.
• the proportion of variance accounted for.
5) “The more you save, the less you spend” describes
• a nonlinear correlation.
• a positive linear correlation.
• a negative linear correlation.
• no correlation.
6) The best-fitting line through a scatterplot is known as the
• linear correlation line.
• linear regression line.
• linear variance line.
• linear scatterplot line.
7) For this question please refer to the graph and type the answer here.
SECTION 11
1) An educational psychologist is interested in determining whether attitudes toward school change with age. She selects 30 seventh-graders, 30 ninth-graders, and 30 eleventh-graders and administers a “Do you like school?” test.
a. How many factors does this experiment have?
c. What is the N in this experiment?
2) For Joan’s doctoral experiment, 15 wheelchair users were assigned to three groups with 5 in each group. These participants navigated in virtual-reality settings. Group 1 participants were in the virtual-reality setting as wheelchair users. Group 2 participants were in the virtual-reality setting in a wheelchair pushed by a walking person. Group 3 participants walked without aid in the virtual-reality setting. Joan measured the number the time needed to complete the navigation of the virtual-reality setting.
a. What is the dependent variable?
b. What is the independent variables?
c. How many levels are there?
d. What is the N?
5) Analysis of variance is designed to compare simultaneously.
• all sample medians
• all sample means
• all sample ranges
• some sample means
