A Science Instructor Assigns a Group of Students to Investigate

question 1

Multiple Choice

A science instructor assigns a group of students to investigate the relationship between the pH of the water of a river and its water's hardness (measured in grains) .Some students wrote these conclusions: "there was a very strong correlation of 0.902 grains between pH of the water and water's hardness." Is the calculation of the correlation appropriate?

• A)No: there is little or no association.
• B)Yes: the pH and the hardness of the water are data collected from the same river.
• C)No: pH and hardness of water have different units.
• D)Yes: correlation is less than 1.
• E)No: correlation has no units.

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Definitions:

Saturated Fat

A type of fat found in animal products and some plant oils, known for raising cholesterol levels and potentially increasing heart disease risk.

MyPlate

A visual guide created by the U.S. Department of Agriculture to help Americans understand and follow healthy eating patterns, consisting of portions from different food groups.

DASH Food Plan

Dietary Approaches to Stop Hypertension; a diet plan promoting the reduction of blood pressure through healthy eating, focusing on low-sodium, high-fiber foods, and a variety of nutrients.

Physical Activity

Any movement produced by the contraction of skeletal muscle that increases energy expenditure above a basal level.