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47 Werken met kansen en statistieken
Opmerking:
Bij elke uitvoering van rand (toevalsgetallen) genereert de TI-84 Plus CE-T dezelfde
reeks toevalsgetallen voor een gegeven startwaarde (seed). De in de fabriek
ingestelde startwaarde (seed) van de TI-84 Plus CE-T voor rand is 0. Om een
andere reeks toevalsgetallen te genereren slaat u een willekeurige startwaarde die
geen nul is op in rand. Om de in de fabriek ingestelde startwaarde te herstellen
slaat u 0 op in rand, of herstelt u de standaardwaarden door naar y L
7:Reset... te gaan. 2:Defaults....
De startwaarde is ook van invloed op de instructies randInt(, randNorm( en randBin
(.
Werken met statistiek
U kunt de statistiek-commando's vinden in het menu . U kunt lijsten met gegevens
creëren en die gegevens vervolgens in een grafiek weergeven of analyseren met
behulp van de statistiek-commando's.
U kunt de volgende statistiekfuncties gebruiken:
Beschrijving Toetsen
Best passende vergelijkingen (regressies) ~ }
Maximaal drie statistische plots definiëren en opslaan y ,
Kansverdelingen y =
Op lijsten gebaseerde statistische analyse y 9 ~ ~
Logistische en sinusregressieanalyse ~ }
Analyse met één en twee variabelen ~ À en ~ Á
Statistische toetsen ~ ~
Inferentiële (mathematische) statistiek
U kunt 16 hypothesetoetsen en betrouwbaarheidsintervallen en 15 verdelingsfuncties
uitvoeren. U kunt uitkomsten van hypothesetoetsen grafisch of numeriek weergeven.
Lijsten met gegevens invoeren:
1. Druk op .
52


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