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2125004343

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Lisa's study assessed the effects of an intervention to facilitate the math skills of low-achieving second grade learners.  She administered a treatment to the students in the form of structured computer lesson and found that students' skills increased.  With which validity threat should Lisa be most concerned?
◦ Instrumentation
◦ History
◦ Statistical regression
◦ Mortality


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Marked as best answer by 2125004343 on Mar 8, 2019

komodo7

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Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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