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Trend Analysis in Power BI

IntermediateSkill Level
4.8+
3,166 reviews
Updated 05/2026
Enhance your reports with trend analysis techniques such as time series, decomposition trees, and key influencers.
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Power BIData Manipulation
3 hr
9 videos
25 Exercises
1,950 XP
38,972
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Course Description

Analyze Time-Series Data

In this course, you’ll learn how to analyze time series, visualize your data, and spot trends. You’ll build new date variables, discover run charts, and get into calculating rolling averages.

Understand Influencing Variables

Finally, you’ll find out how to identify which variables exhibit the most influence on the target variable using Power BI's decomposition trees and key influencers.

What you'll learn

  • Identify the characteristics of a time series and recognize patterns including trends, seasonality, and cyclical variation in a dataset.
  • Recognize the purpose of a rolling average and identify the appropriate window size for smoothing short-term noise in a time series visualization.
  • Differentiate between period-over-period comparison methods and identify the DAX time intelligence functions, including SAMEPERIODLASTYEAR() and DATESBETWEEN(), used to implement them.
  • Identify the use cases for Power BI's Decomposition Tree and Key Influencers visuals in root cause and trend analysis.
  • Distinguish between structured trend analysis and ad hoc exploration and recognize when each approach is appropriate for a given analytical question.

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Prerequisites

Exploratory Data Analysis in Power BI
1

Exploring Time Series Data

In this chapter, you’ll get more familiar with time-based variables and the multiple ways to extract further variables using EDA for analysis—like day of week and time difference. You’ll get hands-on with Power BI as you build line charts to calculate new metrics and uncover trends hiding in your data—including period-over-period change and rolling averages.
Start Chapter
2

Analyzing Time Series in Power BI

In this chapter, you’ll get more familiar with time-based variables and the multiple ways to extract further variables using EDA for analysis—like day of week and time difference. You’ll get hands-on with Power BI as you build line charts to calculate new metrics and uncover trends hiding in your data—including period-over-period change and rolling averages.
Start Chapter
3

Decomposition Trees

One of the most powerful functions of EDA in Power BI is being able to identify which variables have the most influence on your target outcome. A native Power BI visualization tool enabling that is Decomposition Trees. You'll learn about Decomposition Trees, how to construct, then interpret in order to explain a target outcome by other variables.
Start Chapter
4

Key Influencers

In this chapter you'll build another native Power BI tool, Key Influencers visual. It helps you to understand how much a target outcome changes based on specific variables and segments of observations.
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Trend Analysis in Power BI
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*4.8
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  • MOHAMMAD KHALID
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  • James
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  • Saheed
    7 hours ago

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  • MANUEL
    15 hours ago

  • Hamoud
    17 hours ago

MOHAMMAD KHALID

James

Saheed

FAQs

What prior Power BI skills do I need for this course?

You should already know how to create measures and columns using DAX, build common visuals like bar charts, and load data with Power Query. The prerequisite course is Exploratory Data Analysis in Power BI.

What datasets will I work with?

You will analyze a sample of 8,000 Airbnb listings from cities including New York, Paris, Rome, and Sydney, and a synthetic dataset of Glassdoor employee reviews covering ratings and professional history.

What can I do with time series data after completing this course?

You will be able to build run charts, calculate rolling averages, detect anomalies, and break down trends by categories using small multiples, all within Power BI Desktop.

What are the Key Influencers and Decomposition Tree visuals used for?

Key Influencers identifies which variables most strongly affect an outcome, while the Decomposition Tree lets you drill into a metric by multiple variables step by step. Both are native Power BI features that require no coding.

How is this course different from a statistics course?

The focus is on applying analytical concepts such as rolling averages, correlation, and anomaly detection visually inside Power BI, not on mathematical derivations. It is designed for practitioners who need actionable insights, not statistical theory.

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