#### Overview of this book

DAX provides an extra edge by extracting key information from the data that is already present in your model. Filled with examples of practical, real-world calculations geared toward business metrics and key performance indicators, this cookbook features solutions that you can apply for your own business analysis needs. You'll learn to write various DAX expressions and functions to understand how DAX queries work. The book also covers sections on dates, time, and duration to help you deal with working days, time zones, and shifts. You'll then discover how to manipulate text and numbers to create dynamic titles and ranks, and deal with measure totals. Later, you'll explore common business metrics for finance, customers, employees, and projects. The book will also show you how to implement common industry metrics such as days of supply, mean time between failure, order cycle time and overall equipment effectiveness. In the concluding chapters, you'll learn to apply statistical formulas for covariance, kurtosis, and skewness. Finally, you'll explore advanced DAX patterns for interpolation, inverse aggregators, inverse slicers, and even forecasting with a deseasonalized correlation coefficient. By the end of this book, you'll have the skills you need to use DAX's functionality and flexibility in business intelligence and data analytics.
Preface
Thinking in DAX
Tangling with Time and Duration
Transforming Text and Numbers
Evaluating Employment Measures
Processing Project Performance
Calculating Common Industry Metrics
Solving Statistical and Mathematical Formulas
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# Finding the full-time equivalent

The full-time equivalent, or FTE, is the number of hours worked by a full-time employee. When businesses employ numerous part-time employees, it is often beneficial to understand how the hours worked by these part-time employees translate into the equivalent number of full-time employees. The FTE metric is used in numerous other metrics and calculations and is useful for budget analysis, project scheduling, industry analysis, and when comparing the number of FTEs to such things as office square footage, revenues, and profits.

Generally, an FTE is considered to have a theoretical maximum of 2,080 hours. This number is found by multiplying 8 working hours per day by 5 working days per week by 52 weeks per year. 8 * 5 * 52 = 2,080. However, some organizations use a lower figure to account for vacation days, sick days, and holidays.

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