What is the critical value using an alpha level of .05? What is the critical value using an alpha level of .01? Why is the critical value larger when using an alpha of .01?
A college admissions officer wants to know if visiting the campus affects people’s perceptions of the college. He has seven people fill out an attitude toward the college questionnaire before the campus visit, during the visit (at lunch), and after the visit. The data are collected on a 7-point Likert scale with higher numbers indicating more positive attitudes. The data he collects are as follows.
Time Mean
Before 2.43
During/at lunch 3.43
After 5.57
Ans: 3.89 for an alpha of .05; 6.93 for an alpha of 01. It is larger for .01 because a smaller amount of the range of F test statistics is designated as the region of null hypothesis rejection. Therefore, we’ll need a larger test statistic to reject the null hypothesis.
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Classroom climate is affected by
a. furniture arrangement b. activity flow c. teaching style d. all of the above
Categorical data can only derive from quantitative data
Answer the following statement true (T) or false (F)
Which of the following statements about teacher observation is least accurate?
A. Teacher observation is useful when observing process-oriented skills. B. Teacher observation is best utilized when the teacher is looking for specific aspects of the classroom. C. Teacher observations should be recorded to be most effective. D. Teacher observation, if done correctly, is a very objective way to measure student knowledge and skills.
Reliability measures greater than 70–80 percent are usually considered adequate
Indicate whether the statement is true or false