In Order for Two Objects to Have the Same Temperature

question 20

Multiple Choice

In order for two objects to have the same temperature, they must

• A) be in thermal equilibrium.
• B) be in thermal contact with each other.
• C) have the same relative "hotness" or "coldness" when touched.
• D) have all of the properties listed above.
• E) have only properties (b) and (c) above.

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Definitions:

Covariance

A measure that indicates the extent to which two variables change together. If the greater values of one variable mainly correspond with the greater values of the other variable, and the same holds for the lesser values, the covariance is positive; otherwise, it is negative.

Coefficient Of Correlation

A statistical measure that calculates the strength of the relationship between the relative movements of two variables.

Stronger Correlation

Indicates a more pronounced relationship between two variables, often implied by a correlation coefficient closer to -1 or 1.

Least Squares Regression

A statistical method that minimizes the sum of the squares of the differences between observed and predicted values, used for fitting a linear model to data.