Arbeitsbuch Statistik by Angelika Caputo

By Angelika Caputo

Dieses Arbeitsbuch ergänzt perfekt das Lehrbuch Fahrmeir/Künstler/Pigeot/Tutz: Statistik - Der Weg zur Datenanalyse. Es bietet eine Fülle von Aufgaben inklusive Lösungen und Computerübungen mit realen Daten. Es dient damit der Vertiefung und der Einübung des im Lehrbuch vermittelten Stoffes zur Wahrscheinlichkeitsrechnung, deskriptiven und induktiven Statistik. Die fünfte Auflage enthält eine Reihe neuer Aufgaben, die hauptsächlich in Klausuren verwendet wurden.

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1 % (c) Box-Plot der Studiendauer 2. Univariate Deskription und Exploration von Daten 27 (d) Das S¨ aulendiagramm des Merkmals Studiendauer f¨ ur Studierende mit Pr¨ adikatsexamen hat folgende Gestalt: Entsprechend erh¨ alt man das S¨ aulendiagramm des Merkmals Studiendauer f¨ ur Studierende ohne Pr¨ adikatsexamen: 28 2.

40 2. 13 Es gilt n (xi − x¯) = i=1 = = = (x1 − x ¯) + (x2 − x ¯) + . . + (xn − x ¯) x1 + x2 + . . + xn − n · x¯ 1 x1 + x2 + . . + xn − n · (x1 + x2 + . . + xn ) n 0. 14 Es bezeichnen xj1 , . . , xjnj die Daten in der j-ten Schicht, j = 1, . . , r. Dann gilt f¨ ur das arithmetische Mittel x¯ = = = 1 (x11 + x12 + . . + x1n1 + n x21 + x22 + . . + x2n2 + ... xr1 + xr2 + . . + xrnr ) 1 (n1 · x¯1 + n2 · x ¯ 2 + . . + nr · x ¯nr ) n r 1 nj x ¯j . 5, 2. 5. (b) An den im Laufe der Jahre kleiner werdenden Lagemaßen l¨aßt sich ablesen, daß die Leser der Zeitschrift immer weniger Zeit mit Radioh¨oren verbringen.

2500 5000 10000 15000 Histogramm zur Kreditwurdigkeit 20000 Histogramm f¨ ur das Merkmal Kredith¨ ohe: gute Bonit¨at (Y = 0) 40 : Ho e he 30 : 20 1 0 0 0 0 10 : : 05 : 0 .... .. ... ... 0 .... .. ... .... .. ... .... .... .. ... .... .. ... .... .. ...... ...... .. .... ...... .. .... ...... .. .. .... ...... .. ............ .................. ...... ............ .................. .................. ...... ............ ..................

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