TABLE 3-10 The Population of Eight Analysts at a Software Firm Were

question 3

Short Answer

TABLE 3-10
The population of eight analysts at a software firm were asked to estimate the reuse rate when developing a new software system. The following data are given as a percentage of the total code written for a software system that is part of the reuse database.
50, 62.5, 37.5, 75.0, 45.0, 47.5, 15.0, 25.0
-Referring to Table 3-10, what are the variance and standard deviation of the total code that is part of the reuse database?

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Definitions:

Level of Confidence

The degree of certainty or probability that the results of statistical analysis are reliable and not due to random chance.

Confidence Interval

A range of values derived from sample data that is likely to contain the value of an unknown population parameter, expressed at a given level of confidence.

Sample Sizes

The number of individuals or observations included in a sample, which represents a portion of the larger population for the purpose of conducting statistical analysis.

Confidence Interval

A range of values, derived from the sample data, that is likely to contain the value of an unknown population parameter.