I07-21

Question

Scientist: Recent studies regarding ambulation in toddlers have led researchers to hypothesize about a possible link between linguistic sound reproduction and an ability to walk developing within a month of demonstrating an ability to reproduce sounds, as nearly 70% of toddlers in the study who were able to reproduce sounds under consistent stimuli were observed walking independently within a month. 
 
In the table, select for  sample size  a different group of toddlers within the study and for  additional observation  an analysis about this group that when combined would most help to evaluate the validity of the scientific hypothesis. Make only two selections, one in each column.

abhimahna · Answer

Official Solution:   
 
The proportion of toddlers not able to reproduce sounds in the study who were also observed walking independently within a month, would provide additional evidence helpful in evaluating the validity of the hypothesis in the prompt that there is a possible link between linguistic sound reproduction and an ability to walk developing within a month of demonstrating an ability to reproduce sounds.

Correct answer:

Sample size  "Toddlers not able to reproduce sounds in the study"

Additional observation  "Percent observed walking independently within a month"

Frice · Answer

The phrasing of "Sample Size" was confusing to me when the question also stated that the phrase meant another group of samples. In my mind, "size" referred to quantitative numbers, not a group of individuals. Could someone explain if GMAT has the same wording?

arkaja11 · Answer

I second that. It confused me a lot too. Should have been "Study group analyzed" or something.

Ishita2000 · Answer

I don't agree with the explanation. For the additional observations the statement has "within a month" mentioned - which one month is it talking about when they are unable to reproduce sounds?

arkaja11 · Answer

I think this is a  poor-quality  question and the explanation isn't clear enough, please elaborate.

heeeya · Answer

Thank you for the explanation.
Would it decrease
 the validity of the hypothesis that there is a possible link between linguistic sound reproduction and an ability to walk developing within a month of demonstrating an ability to reproduce sounds ] 
if 
 the proportion of toddlers not able to reproduce sounds in the study who were also observed walking independently within a month ] is high?  abhimahna

Bunuel · Answer

This question was deactivated and removed from the database.

I07-21

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Sample size	Additional observation
		Exact number of children in the study
		Toddlers not able to reproduce sounds in the study
		Toddlers able to reproduce sounds in the study
		Percent observed walking independently within a month
		Percent observed reproducing sounds in the study
		Number dismissed from the study