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Średnia arytmetyczna z szeregu punktowego |
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liczba miejsc pracy |
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liczba miejsc pracy |
liczba pracowników naukowych |
xini |
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3 |
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1 |
6 |
6 |
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3 |
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2 |
38 |
76 |
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3 |
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3 |
79 |
237 |
|
MINIMALNA LICZBA MIEJSC PRACY |
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1 |
5 |
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4 |
39 |
156 |
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MAXYMALNA ILOSC MIEJSC PRACY |
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7 |
2 |
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5 |
25 |
125 |
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3 |
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6 |
1 |
6 |
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1 |
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7 |
4 |
28 |
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3 |
razem |
192 |
634 |
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2 |
średnia arytmetyczna z szeregu punktowego |
3.30 |
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4 |
średnia arytmetyczna z szeregu nieuporządkowanego |
3.30 |
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3 |
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3 |
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Uzupełnij powyższą tabelę a następnie porównaj średnie. |
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5 |
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sformułuj wniosek |
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3 |
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2 |
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4 |
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Aby obliczyć wartość średnią z szeregu punktowego stosujemy wzór na średnią arytmetyczną ważoną: |
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3 |
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3 |
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2 |
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3 |
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2 |
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3 |
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4 |
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5 |
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3 |
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gdzie: |
średnia arytmetyczna ważona |
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2 |
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5 |
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warianty cechy zmiennej |
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4 |
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7 |
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liczebność cząstkowa odpowiadająca cesze xi |
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4 |
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3 |
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liczebność zbiorowości |
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5 |
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1 |
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