A program evaluator for a large school district wants to study intelligence in the elementary schools.She randomly selects one classroom at each grade level in each elementary school and administers an intelligence test to the children in those classrooms.In order to find out which school has the most consistent intelligence level,which of the following should she calculate for each school?
A) The mean
B) The standard deviation
C) The median
D) The range
Correct Answer:
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Q1: What is the range of the following
Q2: If you see the notation 
Q4: When computing the variance,why do we square
Q5: A program evaluator for a large school
Q6: A group of 10 students participated in
Q7: What is the range of the following
Q8: If you see the notation
Q9: Which of the following is not communicated
Q10: Sample variance is defined as the
A)average of
Q11: Measures of central tendency indicate the _
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