The main difference between a true- and a quasi-experiment is whether the independent variable can be
a. operationalized.
c. analyzed.
b. measured.
d. randomized.
D
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In 2000, there were _____ single-mother families and _____ single-father families in the United States
a. 5 million; 1 million b. 10 million; 2 million c. 8 million; 2 million d. 7 million; 1 million
Algorithms for computing with these procedures are simpler
a. subtraction with zeros b. two-digit multiplication c. two-digit divisors d. operations on fractions
Imagine that, as a teacher, you are administering a high-stakes achievement test to your students. You have three English language learners in your class, none of whom knew English before immigrating to this country: François (who immigrated 9 months ago and is now getting individual tutoring in English); Mei-Li (who immigrated 3 years ago and spent the first 2 years in a bilingual education
program); and Maria (who immigrated 7 years ago and is now doing well in her English-only classes). Given what you've learned about the amount of time it typically takes for children to master English as a second language, which of these students has/have probably acquired sufficient knowledge of English to earn valid scores on the high-stakes test? a. None of them b. Only Maria c. Both Mei-Li and Maria d. All three of them
Random assignment controls ______ in each group.
A. the dependent variable B. the levels of the independent variable C. individual differences D. the likelihood of observing an effect