From the course: Excel: Managing and Analyzing Data
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Challenge: Checking data quality in Excel - Microsoft Excel Tutorial
From the course: Excel: Managing and Analyzing Data
Challenge: Checking data quality in Excel
(funky music) - [Instructor] Time for the data quality chapter challenge. We've got two here for you. The first one, you just received about 8,000 rows of data, and it is full of duplicates and missing data, and it's going to take at least 20 hours to get this data cleaned up, and you're not going to be able to start it until next week. So the decision has been made to go ahead and use the data as it is. And the question for you is, is there any way in the world that this decision is the responsible one to make? Think about that. Think of some scenarios. Or no, you don't use this data at all, and this is the bad decision. Second challenge, we have these meetings for the Peanut Brittle Connoisseurs International, the Denver, Colorado branch, and we want to upload our data to the club's national directory, but we have to check it first. Over here we have a list of people who are hosts. And here, we say that this list is complete and accurate. And the data, we have members, the dates…
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Contents
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The importance of checking data quality5m 22s
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Use the UNIQUE function to investigate data and data quality5m 54s
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Check data quality with a PivotTable4m 45s
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Check for duplicates with formulas4m 49s
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Find duplicates and stray values with conditional formatting6m 57s
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Deciding if your data is ready for use2m 49s
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Challenge: Checking data quality in Excel2m 9s
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Solution: Checking data quality in Excel4m 55s
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