Operation Manual

7: Statistische berekeningen 91
Gemiddelde, standaarddeviatie en
sommatiestatistieken
8NXQWKHWJHPLGGHOGH GH
VWHHNSURHIVWDQGDDUGGHYLDWLH6
HQ
SRSXODWLHVWDQGDDUGGHYLDWLH
σ
HQVRPPDWLHVWDWLVWLHNHQ
Q
Σ
[HQ
Σ
[
YDQ[JHJHYHQVEHUHNHQHQ9RRUGH[\
JHJHYHQVNXQWXRRNKHWJHPLGGHOGHGH
VWHHNSURHIVWDQGDDUGGHYLDWLHHQGH
SRSXODWLHVWDQGDDUGGHYLDWLHYDQ\JHJHYHQVHQGH
VRPPDWLHVWDWLVWLHNHQ
Σ
\
Σ
\
HQ
Σ
[\EHUHNHQHQ
Voorbeeld 1. 'HNDSLWHLQYDQHHQMDFKWZLOEHSDOHQKRHYHHOWLMGKHWNRVW
RPHHQ]HLOWHYHUZLVVHOHQ=LMNLHVWKLHUYRRU]HVZLOOHNHXULJHOHGHQYDQ
KDDUEHPDQQLQJREVHUYHHUWKHQELMKHWZLVVHOHQYDQKHW]HLOHQVFKULMIW
KHWEHQRGLJGHDDQWDOPLQXWHQRS%HUHNHQKHW
JHPLGGHOGHHQGHVWDQGDDUGGHYLDWLHYDQGHWLMGHQ%HUHNHQRRNGHZRUWHO
XLWKHWJHPLGGHOGHYDQGHNZDGUDWHQPHWGHIRUPXOH 
Toetsen Beschrijving
$DQWDOLQJHYRHUGHJHJHYHQVSXQWHQ
6RPYDQGH[ZDDUGHQ
6RPYDQGH\ZDDUGHQ
6RPYDQGHNZDGUDWHQYDQGH[ZDDUGHQ
6RPYDQGHNZDGUDWHQYDQGH\ZDDUGHQ
6RPYDQGHSURGXFWHQYDQGH[DQG\
ZDDUGHQ
Toetsen: Display: Beschrijving:
0,00
:LVWVWDWLVWLVFKHUHJLVWHUV
1,00
9RHUWGHHHUVWHWLMGLQ
2,00
9RHUWGHWZHHGHWLMGLQ
3,00
9RHUWGHGHUGHWLMGLQ
4,00
9RHUWGHYLHUGHWLMGLQ
5,00
9RHUWGHYLMIGHWLMGLQ
[
x
2
n⁄
∑
10B.book Page 91 Wednesday, June 28, 2000 3:31 PM