Air pollution control specialists monitor the amount of ozone, carbon dioxide, and nitrogen dioxide in the...
- Air pollution control specialists monitor the amount of ozone, carbon dioxide, and nitrogen dioxide in the air on a daily basis. Throughout the first weekend of November the specialists recorded the levels of nitrogen dioxide every 3 hours (i.e. at 12am/pm, 3am/pm, 6am/pm, 9am/pm) each day.
| Day | Hour | NO2 Level |
| 1-Nov | 12:00 AM | 35 |
| 3:00 AM | 25 | |
| 6:00 AM | 32 | |
| 9:00 AM | 45 | |
| 12:00 PM | 40 | |
| 3:00 PM | 25 | |
| 6:00 PM | 36 | |
| 9:00 PM | 50 | |
| 2-Nov | 12:00 AM | 42 |
| 3:00 AM | 28 | |
| 6:00 AM | 36 | |
| 9:00 AM | 50 | |
| 12:00 PM | 48 | |
| 3:00 PM | 35 | |
| 6:00 PM | 38 | |
| 9:00 PM | 55 | |
| 3-Nov | 12:00 AM | 50 |
| 3:00 AM | 42 | |
| 6:00 AM | 55 | |
| 9:00 AM | 70 | |
| 12:00 PM | 60 | |
| 3:00 PM | 51 | |
| 6:00 PM | 72 | |
| 9:00 PM | 68 |
- Fit an appropriate time series regression line for the data. Write your estimated line below. Be sure to label what your variables represent.
- According to your regression line, what are the forecasted NO2 levels for November 4th at the following times
12 AM:
6 AM:
3 PM:
9 PM:
Homework Answers
Answer:
Given Data
Air pollution control specialists monitor the amount of ozone, carbon dioxide, and nitrogen dioxide in the air on a daily basis. Throughout the first weekend of November the specialists recorded the levels of nitrogen dioxide every 3 hours (i.e. at 12 am/pm, 3 am/pm, 6 am/pm, 9 am/pm) each day.
Given Table:
| Day | Hour | NO2 Level |
| 1-Nov | 12:00 AM | 35 |
| 3:00 AM | 25 | |
| 6:00 AM | 32 | |
| 9:00 AM | 45 | |
| 12:00 PM | 40 | |
| 3:00 PM | 25 | |
| 6:00 PM | 36 | |
| 9:00 PM | 50 | |
| 2-Nov | 12:00 AM | 42 |
| 3:00 AM | 28 | |
| 6:00 AM | 36 | |
| 9:00 AM | 50 | |
| 12:00 PM | 48 | |
| 3:00 PM | 35 | |
| 6:00 PM | 38 | |
| 9:00 PM | 55 | |
| 3-Nov | 12:00 AM | 50 |
| 3:00 AM | 42 | |
| 6:00 AM | 55 | |
| 9:00 AM | 70 | |
| 12:00 PM | 60 | |
| 3:00 PM | 51 | |
| 6:00 PM | 72 | |
| 9:00 PM | 68 |
After adding t column in above table:
| Day | Hour | NO2 Level | t |
| 1-Nov | 12:00 AM | 35 | 1 |
| 3:00 AM | 25 | 2 | |
| 6:00 AM | 32 | 3 | |
| 9:00 AM | 45 | 4 | |
| 12:00 PM | 40 | 5 | |
| 3:00 PM | 25 | 6 | |
| 6:00 PM | 36 | 7 | |
| 9:00 PM | 50 | 8 | |
| 2-Nov | 12:00 AM | 42 | 9 |
| 3:00 AM | 28 | 10 | |
| 6:00 AM | 36 | 11 | |
| 9:00 AM | 50 | 12 | |
| 12:00 PM | 48 | 13 | |
| 3:00 PM | 35 | 14 | |
| 6:00 PM | 38 | 15 | |
| 9:00 PM | 55 | 16 | |
| 3-Nov | 12:00 AM | 50 | 17 |
| 3:00 AM | 42 | 18 | |
| 6:00 AM | 55 | 19 | |
| 9:00 AM | 70 | 20 | |
| 12:00 PM | 60 | 21 | |
| 3:00 PM | 51 | 22 | |
| 6:00 PM | 72 | 23 | |
| 9:00 PM | 68 | 24 |
According to your regression line, what are the fore casted NO2 levels for November 4th at the following times
| 04-Nov | t | y^ | |
| 12:00 AM | 25 | 63.833 | |
| 3:00 AM | 26 | 65.3133 | |
| 6:00 AM | 27 | 66.7933 | |
| 9:00 AM | 28 | 68.2733 | |
| 12:00 PM | 29 | 69.7533 | |
| 3:00 PM | 30 | 71.7133 | |
| 6:00 PM | 31 | 72.7133 | |
| 9:00 PM | 32 | 74.1933 |
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Air pollution control specialists monitor the amount of ozone,
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