Why Is Systems Development Difficult and Risky

question 91

Essay

Why is systems development difficult and risky?

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Definitions:

T-statistic

A type of statistic used in hypothesis testing, derived from the standardized difference between a sample statistic and its hypothesized population value, divided by the standard error.

Perfect Relationship

Refers to a situation where two variables move together in either 100% positive or 100% negative linear correlation, indicating a direct relationship without any variation.

Variance

Variance is a statistical measurement that describes the spread of numbers in a data set, indicating how far each number in the set is from the mean.

T-statistics

A measure used in statistical analysis to determine the difference between a sample statistic and its hypothesized population parameter, scaled by the standard error.