Sentence Completions - PSAT Critical Reading

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Question

Choose the word or set of words that best completes the following sentence.

It is often difficult to discern patterns in the many and                      elements of stock market data available at any given time; however, order does begin to become apparent when one                        the data in various ways, examining it according to various approximated subgroups.

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Answer

The key expression is “approximated subgroups” to which the many elements are contrasted in the first half of the sentence. “Disparate” items are those that are differing to a degree that comparison becomes difficult (if not wholly impossible). It comes from Latin roots meaning “unequal,” reflected in the English word “disparity.” When something is gathered together, it is “aggregated,” a word related to words such as “segregated” (gathered into separate groups) and “congregation.” These are derived from the Latin for flock (“gregis”).

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