An Investigation of the Relationship Between Years of Formal Education

question 50

Multiple Choice

An investigation of the relationship between years of formal education and IQ that was conducted with a sample size of 100 found a statistically significant correlation of .25.Another investigation of the same relationship had the same r value based on a sample size of 10,but it was not statistically significant.Why might this be?

• A)a sample size of 100 has too much sampling error
• B)a sample size of 10 is more likely to produce a Type I error
• C)as sample size increases so does the power of the statistic
• D)the standard error was larger in the sample where N = 100

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Definitions:

Duration

the length of time that something lasts or continues.

Rehearsal

A cognitive process in which information is repeated over and over as a possible way of learning and remembering it.

Executive Control

A set of cognitive processes including attentional control, inhibitory control, working memory, and cognitive flexibility, which regulate the flow of information and behavior.

Phonological Loop

A component of the working memory model that deals with verbal and auditory information, allowing it to be held in mind for short periods.