Indhold KAPITEL 1 Deskriptiv statistik Ugrupperede- og grupperede observationer .............................................. 1 1.1 Hvad er statistik? ................................................................................................................................ 2 1.2 Forskellen på ugrupperede- og grupperede observationer ............................................................... 2 1.3 Ugrupperede observationer ............................................................................................................... 2 1.4 Stolpediagram..................................................................................................................................... 4 1.5 Middelværdi eller middeltal ............................................................................................................... 5 1.6 Fraktiler............................................................................................................................................... 6 1.7 Kvartiler - specielle fraktiler................................................................................................................ 7 1.8 Hvordan finder man kvartilsættet for et ugrupperet datasæt? ......................................................... 7 1.9 Boksplot ............................................................................................................................................ 10 1.10 Grupperede observationer ............................................................................................................. 14 1.11 Histogram ....................................................................................................................................... 16 1.12 Middelværdi eller middeltal ........................................................................................................... 17 1.13 Sumkurve, kvartiler og fraktiler ...................................................................................................... 18 1.14 Sumkurve ........................................................................................................................................ 19 1.14 Kvartiler .......................................................................................................................................... 21 1.15 Fraktiler........................................................................................................................................... 22 1.17 Population og stikprøver ................................................................................................................ 25 1.18 Hvordan man kan opstille, løse og konkludere på en skriftlig eksamensopgave ........................... 27 1.19 Formelsamling ................................................................................................................................ 30
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