Shown Below Is a Segment of Polypropylene

question 117

Multiple Choice

Shown below is a segment of polypropylene. Which of the following terms describes the stereochemistry of the methyl substituents?

• A) atactic
• B) isotactic
• C) syndiotactic
• D) tacky
• E) peritactic

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Definitions:

Dependent Variable

In statistical modeling, this is the variable being tested and measured to see if it is affected by changes in the independent variables.

Cook's D

A statistic used in regression analysis to identify influential data points that can disproportionately affect the results of the regression.

Leverage

A measure of how far the values of the independent variables are from their mean values.

Regression Results

The outcomes of regression analysis, including the estimated relationships between variables and measures of these relationships' strength and significance.