Data Flow Diagrams

question 32

Multiple Choice

Data flow diagrams:

• A)Accomplish the same purpose as system flowcharts
• B)Are different from system flowcharts since they focus on a logical view of the information system
• C)Are useless for planning a new system
• D)Are never used in analyzing an existing system

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Definitions:

Standard Error

The typical deviation within the distribution of samples for a statistic, often specifically of the mean.

Standard Deviation

An indicator of the variability within a set of data points, reflecting how much individual points differ from the average.

Population Mean

The total sum of all the values in a population divided by the number of values in that population, serving as a measure of central tendency.

Point Estimate

A single value given as an estimate of a population parameter derived from a sample.