The American Educational Research Journal (Fall 1998) published a study of students perceptions of their science ability

Question:

The American Educational Research Journal (Fall 1998) published a study of students’ perceptions of their science ability in hands-on classrooms. A first-order, main effects model that was used to predict ability perception (y) included the following independent variables:

Control Variables

x1 = Prior science attitude score

x2 = Science ability test score

x3 = 1 if boy, 0 if girl

x4 = 1 if classroom 1 student, 0 if not

x5 = 1 if classroom 3 student, 0 if not

x6 = 1 if classroom 4 student, 0 if not

x7 = 1 if classroom 5 student, 0 if not

x8 = 1 if classroom 6 student, 0 if not

Performance Behaviors

x9 = Active-leading behavior score

x10 = Passive-assisting behavior score

x11 = Active-manipulating behavior score

a. Hypothesize the equation of the first-order, main effects model for E(y).

b. The researchers also considered a model that included all possible interactions between the control variables and the performance behavior variables. Write the equation for this model for E(y).

c. The researchers determined that the interaction terms in the model, part b, were not significant, and therefore used the model, part a, to make inferences. Explain the best way to conduct this test for interaction. Give the null hypothesis of the test.

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For  book-img-for-question

Statistics For Engineering And The Sciences

ISBN: 9781498728850

6th Edition

Authors: William M. Mendenhall, Terry L. Sincich

Question Posted: