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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
copy
Opgave

Swipe to start coding

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

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Switch to desktopSkift til skrivebord for at øve i den virkelige verdenFortsæt der, hvor du er, med en af nedenstående muligheder
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Sektion 3. Kapitel 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
Opgave

Swipe to start coding

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

Løsning

Switch to desktopSkift til skrivebord for at øve i den virkelige verdenFortsæt der, hvor du er, med en af nedenstående muligheder
Var alt klart?

Hvordan kan vi forbedre det?

Tak for dine kommentarer!

Sektion 3. Kapitel 3
single

single

close

Awesome!

Completion rate improved to 2.63

bookMean values

Stryg for at vise menuen

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
Opgave

Swipe to start coding

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

Løsning

Switch to desktopSkift til skrivebord for at øve i den virkelige verdenFortsæt der, hvor du er, med en af nedenstående muligheder
Var alt klart?

Hvordan kan vi forbedre det?

Tak for dine kommentarer!

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