The Little Lines in an E-R Diagram Used as Shorthand

question 38

Multiple Choice

The little lines in an E-R diagram used as shorthand for the multiple lines between two entities are referred to as ________.

• A) a crow's foot
• B) identifiers
• C) attributes
• D) a tracker

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Definitions:

Confidence Interval

A variety of values taken from statistics of a sample, presumed to hold the value of a not yet known population attribute.

Equality of Means

A statistical hypothesis test to determine whether there is a significant difference between the means of two or more groups.

Population Variances

Population variances measure the degree to which each number in a set differs from the mean of the population, showing the spread or dispersion within the set.

Significance Level

The probability of rejecting the null hypothesis in a statistical test when it is true.