Average between two columns not correct

Hello, I've been trying to calculate the average of the division of 2 columns in PowerBi Desktop and not receive the right results. As you can see the column CTR is returning 0,66% for the fi...

Need Help

v-jianboli-msft

3 years ago

Hi jhlatinia ,

The result you get is incorrect is because it is the sum of all rows. In other words, they calculate the percentage of each row first and then sum it, which gives a different result than summing and then calculating the percentage.

Please try:

CTR = 
VAR _a =
    SUMMARIZE (
        'Table',
        'Table'[Campaign Group Name],
        "CTR",
            DIVIDE (
                CALCULATE (
                    SUM ( 'Table'[Clicks] ),
                    FILTER (
                        'Table',
                        [Campaign Group Name] = EARLIER ( 'Table'[Campaign Group Name] )
                    )
                ),
                CALCULATE (
                    SUM ( 'Table'[Impressions] ),
                    FILTER (
                        'Table',
                        [Campaign Group Name] = EARLIER ( 'Table'[Campaign Group Name] )
                    )
                )
            )
    )
RETURN
    AVERAGEX ( _a, [CTR] )

Final output:

Best Regards,

Jianbo Li

If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

Average between two columns not correct.pbix36 KB

v-jianboli-msft

Community Support

3 years ago

Hi jhlatinia ,

What does your Start Date look like? What is the relationship between the date and the value?

Sorry for that the information you have provided is not making the problem clear to me. Can you please share more details to help us clarify your scenario?

Please provide me with more details about your table and your problem or share me with your pbix file after removing sensitive data.

Refer to:

How to provide sample data in the Power BI Forum

How to Get Your Question Answered Quickly

Best Regards,

Jianbo Li

If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.