Statistiske deskriptorer og diagrammer

Observation: .................................................................................................................................................. 3

Observation sæt/data sæt:............................................................................................................................ 3

Størrelsen: ..................................................................................................................................................... 3

Hyppighed h(x): ............................................................................................................................................ 3

Summeret hyppighed H(x):........................................................................................................................... 3

Frekvens f(x): ................................................................................................................................................ 3

Summeret frekvens F(x): .............................................................................................................................. 3

Typetal: .......................................................................................................................................................... 4

Middeltal/Gennemsnit: ................................................................................................................................. 4

Medianen: ..................................................................................................................................................... 4

Kvartilsæt:...................................................................................................................................................... 4

Størsteværdi: ................................................................................................................................................. 4

Mindsteværdi: ............................................................................................................................................... 4

Variationsbredde. .......................................................................................................................................... 5

Procentdiagram: ............................................................................................................................................ 5

Cirkeldiagram:................................................................................................................................................ 5

Pindediagram:................................................................................................................................................ 5

Trappediagram: ............................................................................................................................................. 6

Søjlediagram: ................................................................................................................................................. 6

Sumkurve: ...................................................................................................................................................... 6

Boksplot: ........................................................................................................................................................ 7

Mindsteværdi: ............................................................................................................................................... 8

Størsteværdi: ................................................................................................................................................. 8

Variationsbredde: .......................................................................................................................................... 8

Median:.......................................................................................................................................................... 8

Typetal: .......................................................................................................................................................... 8

Kvartilsæt:...................................................................................................................................................... 8

Hyppighedstabel i hånden ............................................................................................................................... 11

Hyppighedstabel i Excel ................................................................................................................................... 13

Enkeltobservationer ........................................................................................................................................ 15

Opgaver, enkeltobservationer ......................................................................................................................... 15

Grupperet observationer............................................................................................................................. 17

Opgaver, grupperet observationer.............................................................................................................. 18

Boksplot i GeoGebra .................................................................................................................................... 20

Sumkurve i Excel .......................................................................................................................................... 20

Pindediagram i Excel og GeoGebra ............................................................................................................. 21

Manipulation med diagrammer .................................................................................................................. 21

Statistik

Observation:

-

Det kalder man alle de oplysninger man får under sin indsamling. F.eks. kan jeg skrive farven på

bilerne på vejen så er det en observation hver gang jeg ser en.

Observation sæt/data sæt:

-

Det er hele sættet af observationer. Så det er alle de farvede biler jeg har set.

Størrelsen:

-

Det er antallet af observationer jeg har lavet så hvis jeg har observeret 20 biler så er mit