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Statistische berekeningen
Opmerking!
Gebruik de
−toets, om de SD−modus op te roepen als u
statistische berekeningen met de standaardafwijking wilt uitvoeren.
SD:
Standaardafwijking (SD−modus)
D De gegevensinvoer begint altijd met om het statistisch
geheugen te wissen.
D Met de ingevoerde gegevens worden de waarden
voor b, a, i, s, n, o berekend, die u
met de nevenstaande toetsen kunt oproepen.
Voorbeeld 1:
Te berekenen: o, n, s, i, a, b voor de volgende
gegevens: 55, 54, 51, 55, 53, 53, 54, 52
Geheugen wissen:
55 54 51 55
53 54 52
(standaardafwijking van steekproef o)
(standaardafwijking van populatie n)
(rekenkundig gemiddelde s)
(aantal gegevens i)
(som van de waarden a)
(som van de kwadraten van de waarden b)
Aandachtspunten bij de gegevensinvoer
D Met worden dezelfde gegevens tweemaal ingevoerd.
D Dezelfde gegevens kunnen met meermaals worden
ingevoerd. Om de waarde 110 tienmaal in te voeren drukt u
bijvoorbeeld op 110
10 .
D De bovengenoemde resultaten kunnen in elke gewenste volgorde en
niet alleen in de bovengenoemde worden bereikt.
D Om de als laatste ingevoerde gegevens te wissen drukt u op
.
52.
SD.........
1.407885953
1.316956719
53.375
8.
427.
22805.
14


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