A Researcher Studies How the Scores Children Receive on a Spelling

question 39

Multiple Choice

A researcher studies how the scores children receive on a spelling test are affected by the amount of sugar they consumed for breakfast. She identifies a group of children and feeds half of them a high-sugar breakfast and feeds the other half a low-sugar breakfast. She gives them the spelling test three hours later. In this study, what is the independent variable?

• A) the number of words the children can spell correctly on the spelling test
• B) the number of children tested in the study
• C) amount of sugar eaten for breakfast
• D) the difficulty of the words on the spelling test

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Definitions:

Life Insurance Preference

Preferences or choices individuals make regarding life insurance policies, influenced by factors like premium amounts, coverage, and personal circumstances.

Significance

The measure of the strength and certainty of the results obtained from statistical testing.

Chi-Square Test

A statistical test used to determine if there is a significant difference between expected frequencies and observed frequencies in one or more categories.

Degrees of Freedom

The number of independent pieces of information used in the calculation of a statistic, often impacting its distribution.