You Have Estimated the Following Equation: = 607

question 12

Multiple Choice

You have estimated the following equation: = 607.3 + 3.85 Income - 0.0423 Income2, where TestScore is the average of the reading and math scores on the Stanford 9 standardized test administered to 5th grade students in 420 California school districts in 1998 and 1999.Income is the average annual per capita income in the school district,measured in thousands of 1998 dollars.The equation

• A)suggests a positive relationship between test scores and income for most of the sample.
• B)is positive until a value of Income of 610.81.
• C)does not make much sense since the square of income is entered.
• D)suggests a positive relationship between test scores and income for all of the sample.

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Definitions:

Pregnancy

The condition of having a developing embryo or fetus in the uterus, lasting about 40 weeks from the last menstrual period to childbirth.

Liver Enzymes

Proteins found in the liver that catalyze and regulate chemical reactions, often measured in blood tests to assess liver health.

Calories

Units of energy in food; the fuel our bodies use for energy.

Cane Sugar

Refined sugar obtained from the sugarcane plant, often used as a sweetener in foods and beverages.