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SQL Basics

bookMean values

The next function we will talk about - is mean. Mean (average) is probably one of the most simple and usable statistics in real life.

For example, for our audi_cars table, we can calculate the average mileage for cars manufactured in 2020. To calculate the average use AVG function followed by column name.


              
123

            
SELECT AVG(mileage)
FROM audi_cars
WHERE year = 2020
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Task

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Using table audi_cars calculate the average price of the A4 model manufactured in 2018.

Solution

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SectionΒ 3. ChapterΒ 3
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bookMean values

The next function we will talk about - is mean. Mean (average) is probably one of the most simple and usable statistics in real life.

For example, for our audi_cars table, we can calculate the average mileage for cars manufactured in 2020. To calculate the average use AVG function followed by column name.


              
123

            
SELECT AVG(mileage)
FROM audi_cars
WHERE year = 2020
copy
Task

Swipe to start coding

Using table audi_cars calculate the average price of the A4 model manufactured in 2018.

Solution

Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
Everything was clear?

How can we improve it?

Thanks for your feedback!

SectionΒ 3. ChapterΒ 3
single

single

close

Awesome!

Completion rate improved to 2.63

bookMean values

Swipe to show menu

The next function we will talk about - is mean. Mean (average) is probably one of the most simple and usable statistics in real life.

For example, for our audi_cars table, we can calculate the average mileage for cars manufactured in 2020. To calculate the average use AVG function followed by column name.


              
123

            
SELECT AVG(mileage)
FROM audi_cars
WHERE year = 2020
copy
Task

Swipe to start coding

Using table audi_cars calculate the average price of the A4 model manufactured in 2018.

Solution

Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
Everything was clear?

How can we improve it?

Thanks for your feedback!

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