On May 12, 2011, It Cost U

question 33

Multiple Choice

On May 12, 2011, it cost U.S.$.04 to buy one Russian ruble.How many Russian rubles would U.S.$1 buy?

• A)40 
• B)33 
• C)25 
• D)14

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Definitions:

Positive Linear Relationship

A direct correlation between two variables in which they both increase or decrease together at a constant rate, as depicted by a positively sloped line on a graph.

Scatter Diagram

A graphical representation of the relationship between two quantitative variables, showing how one variable is affected by changes in the other variable.

Least Squares Method

A statistical technique used to determine the best-fitting line that minimizes the sum of the squared differences between observed and estimated values.

Scatter Diagram

A graphical representation of two variable data points that allows for the visualization of any correlations or patterns between them.