7. Statistiske beregninger
Eksempel:
(1)Hvad er gennemsnittet og standardafvigelsen? Data: 55, 53, 57, 54, 51, 56, 55, 52
Indtastning | Display | Bemærkning | |||||
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| SD |
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[SHIFT] [SD] |
| 0 | vælg | ||||
[5] [5] | [DATA] |
| 1 | vis alle | |||
[5] [3] | [DATA] |
| 2 | inputdata | |||
[5] [7] | [DATA] |
| 3 |
| |||
[5] [4] | [DATA] |
| 4 |
| |||
[5] [1] | [DATA] |
| 5 |
| |||
[5] [6] | [DATA] |
| 6 |
| |||
[5] [5] | [DATA] |
| 7 |
| |||
[5] [2] | [DATA] |
| 8 |
| |||
| [ |
| ] | 54.125 | Gennemsnit af dataene | ||
| x | ||||||
[SHIFT] [Σx] | 433 | Summen af dataene | |||||
[SHIFT] [Σx2] | 23465 | Summen af dataenes kvadrat | |||||
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| [n] |
| 8 | Antal inputdata | ||
| 2.031009601 | Stikprøvestandardafvigelse | |||||
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| [x2] | 4.125 | Upåvirket af varians | ||||
[SHIFT] [σn] | 1.899835519 | Populationsstandardafvigelse | |||||
(σn) | |||||||
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[SHIFT] [SD] |
| 0 | Ryd | ||||
(2) Rettelse af data |
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| Indtastning | Display | Bemærkning | ||||
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| SD |
| |
| [SHIFT] [SD] | 0 | Vælg | ||||
| [5] [0] [DATA] | 1 |
| ||||
| [6] [0] [DATA] | 2 | Indtast de forkerte data (60) | ||||
[6] [0] [SHIFT] [DEL] | 1 | Ryd de forkerte data (60) | |||||
| [5] [6] [DATA] | 2 | Indtast de rigtige data (56) | ||||
[5] | [4] [x] [3] [DATA] | 5 | Indtast de forkerte data (54x3) | ||||
[5] [4] [x] [3] [SHIFT] [DEL] | 2 | Ryd de forkerte data (54x3) | |||||
[5] | [8] [x] [3] [DATA] | 5 | Indtast de rigtige data (58x3) | ||||
[5] | [2] [x] [4] [DATA] | 9 | Indtast de forkerte data (52x4) | ||||
| [5] [5] [DATA] | 10 | Indtast de rigtige data (55) | ||||
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SR135_Danish_090326.doc SIZE140x75mm SCALE 2:1 2009/3/26
