[Solution Library] Consider the following data on 20 chemical reactions, with Y = chromatographic retention time (seconds) and X = molecular weight (gm/mole). (a)
Question: Consider the following data on 20 chemical reactions, with Y = chromatographic retention time (seconds) and X = molecular weight (gm/mole). (a) Make a scatter plot. (b) Use Excel to fit the regression, with fitted equation and R 2 . (c) In your own words, describe the fit. (Data provided by John Seeley of Oakland University.) Chemicals
| Retention Time and Molecular Weight | ||
| Name | Retention Time | Molecular Weight |
| alpha-pinene | 234.50 | 136.24 |
| cyclopentene | 95.27 | 68.12 |
| p-diethylbenzene | 284.00 | 134.22 |
| decane | 250.60 | 142.29 |
| toluene | 174.00 | 92.14 |
| benzene | 135.70 | 78.11 |
| 2-methylpentane | 97.24 | 86.18 |
| 2,3 dimethylbutane | 100.70 | 86.18 |
| 1,7-octadiene | 172.20 | 110.20 |
| 1,2,4-trimethylbenzene | 262.70 | 120.19 |
| 2,3,4-trimethylpentane | 160.98 | 114.23 |
| ethylcyclohexane | 195.07 | 112.22 |
| limonene | 271.50 | 136.24 |
| methylcyclohexane | 153.57 | 98.19 |
| m-diethylbenzene | 281.50 | 134.22 |
| 2,3-dimethylpentane | 131.83 | 100.20 |
| 2,2-dimethylbutane | 89.34 | 86.18 |
| pentane | 78.00 | 72.15 |
| isooctane | 136.90 | 114.23 |
| hexane | 106.00 | 86.18 |
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