Why is it important to divide by df to compute sample variance?
A. Doing so makes the sample variance an unbiased estimator of the population variance.
B. Doing so ensures that the value for sample variance varies between 0 and 1.
C. Doing so minimizes the likelihood that the sample variance will be a negative value.
D. It is not important; there is no advantage for dividing by df.
Ans: A
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On the first day of school, Mrs. Rose singles Meagan out by telling her that she had her sister a few years earlier. Mrs. Rose goes on by saying, "If you're anything like your sister, this will be a very difficult year for you." This is an example of what type of teacher behavior?
a. intentionally inviting b. intentionally disinviting c. unintentionally inviting d. unintentionally disinviting
A student's receptive vocabulary is defined as all the words they
A. use in writing or speaking to others. B. can understand when they read or listen to a speaker. C. use and speaking and listening to a speaker. D. understand when they read or write.
Understanding the issue is an ongoing process that occurs throughout the problem solving between supervisors and teachers. The supervisor uses a reflective behavior in which of the following:
a. To understand the initial problem b. To paraphrase understanding of the teacher's message c. To restate the teacher's plan d. All of the above
Describe the steps in the two-part format for introducing and practicing irregular words
What will be an ideal response?