Evaluate the Algebraic Expression for the Given Values of the Variables

question 223

Multiple Choice

Evaluate the algebraic expression for the given values of the variables. $0.8 x + 0.7 y$ for $x = - 2 \text { and } y = 4$

• A) 1.6
• B) 1.3
• C) 1.4
• D) 0.9
• E) 1.2

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Definitions:

Sample Correlation Coefficient

A measure that indicates the degree of linear relationship between two variables in a sample, ranging between -1 and 1, where 1 means a perfect positive correlation and -1 a perfect negative correlation.

Regression Statistic

A measure used in regression analysis to assess the relationship between variables, typically involving parameters such as coefficients that indicate the strength and direction of the relationships.

Durbin-Watson Statistic

A test statistic used to detect the presence of autocorrelation in the residuals from a regression analysis.

Autocorrelation

The statistical relationship of a variable with itself over successive time intervals, often used in time series analysis to identify repeating patterns or seasonal effects.