According to Leo, Which of the Following Is a Problem

question 184

Multiple Choice

According to Leo, which of the following is a problem with the MTA study of the effects of Ritalin on very young children?

• A) the sample of parents that they used in the research was not a random sample of typical parents in the United States.
• B) the group of parents who were selected for the study was already biased toward the idea that ADHD is a disease that can be treated with medications.
• C) the teachers in this study found that, although medication improved attention among these children, it did not have any effect on hyperactivity.
• D) all of the above

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Definitions:

Standard Error

Standard error is a statistical term that measures the accuracy with which a sample distribution represents a population by using standard deviation.

Estimate

An approximation or educated guess based on available data or evidence.

Mean

The average of a set of values, calculated by dividing the sum of these values by their count.

Segmentation Variable

A characteristic used to divide a population or market into subsets, based on shared attributes, for targeted analysis or marketing.