Example 43
Find A, B, and C for the following data using quadratic regression and estimate y’ = ? for x = 58 and x’ =? for y =143
| n | 1 | 2 | 3 |
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| x | 57 | 61 | 67 |
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| y | 101 | 117 | 155 |
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[ MODE ] 3 [] |
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| Pwr | Inv | Quad |
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| 1 | 2 | 3 |
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3 [ 2nd ] [ Scl ] [ = ] |
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| REGDEG | ||||
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| Scl |
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| 0. | |
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57 [ , ] 101 [ DT ] 61 [ , ] 117 [ DT ] |
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67 [ , ] 155 [ DT ] [ 2nd ] [ A ] [ = ] | A |
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| 684.3 | |||||||
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| M |
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[ 2nd ] [ B ] [ = ] |
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| REGDEG | |||
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| B |
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| 23.53333333 | ||
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| M | ||
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[ 2nd ] [ C ] [ = ] |
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| REGDEG | |||
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| C |
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| 0.233333333 | ||
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| M | ||
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58 [ 2nd ] [ y ] |
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| ∧ | REGDEG | |||
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| y |
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| M |
| 104.3 |
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143 [ 2nd ] [ x ] |
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| ∧ | REGDEG | |||
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| x 1 |
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| M | 65.36790453 | |
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[ 2nd ] [ x ] |
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| ∧ | REGDEG | |||
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| x 2 |
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| M | 35.48923833 | |
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PRINTED IN CHINA | (Ex) HDBM17D1508 MWB |
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