All of These Values Are Also Good Candidates to Use

question 4

Multiple Choice

All of these values are also good candidates to use as a table's primary key field EXCEPT ____.

• A) student identification numbers
• B) employee numbers
• C) Social security numbers
• D) birthdates

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Definitions:

Confidence Interval

Confidence interval is a range of values, derived from sample statistics, that is likely to contain the value of an unknown population parameter with a certain level of confidence.

Population Standard Deviation

Population standard deviation is a measure of the dispersion or variation in a set of values from a population, calculating how spread out the values are from the population mean.

Population Mean

The average value of all elements in a population, where the population represents the entire set of interest.

Sample Mean

The average of all the data points in a sample, used as an estimate of the population mean.