Variance (s2) may be defined as ______.

a. the most common or frequently occurring score in a distribution
b. the average squared deviation of a score from the mean
c. the mathematical average
d. the score that splits a distribution into two equal halves


b. the average squared deviation of a score from the mean

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Division is used to solve two types of problems, ____________________ and ____________________

Fill in the blank(s) with the appropriate word(s).

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A school using enrollment and attendance data to inform teaching and learning is using which type of data?

a. School process b. Perception c. Demographic d. Evidence of student learning

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Phonological knowledge is the knowledge of

A) the sound-symbol system of a language. B) the system of rules or grammar for using a language. C) how language is used differently in different settings. D) meaningful word parts.

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Language development activities for infants should

A) focus on developing expressive language. B) focus on establishing communication loops. C) focus on developing morphemic knowledge. D) be a standard series of speech exercises.

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