In 1973, Part of the Flat Ground on Which a Subdivision

question 76

Multiple Choice

In 1973, part of the flat ground on which a subdivision was located became saturated and began to flow toward the Saint Lawrence River at speeds of up to 26 kmph (16 mph) . The ground that flowed consisted of silts and clays-not large, rocky regolith. What type of mass wasting event was this?

• A) debris avalanche
• B) soil creep
• C) Earth flow
• D) lahar

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Definitions:

Positive Relationship

Relationship in which increases in scores for one variable are associated with increases in scores of another variable.

Population Means

The average value of a particular variable for the entire population, which provides a parameter that can be estimated through the use of sample means.

Pearson Correlation

A measure of the linear correlation between two variables X and Y, giving a value between +1 and -1 inclusive.

Covariance

A statistic that indicates the degree to which two variables vary together.