Search the Internet for U.S. climate data. Choose the city in which you live. Cl

Question

Search the Internet for U.S. climate data.

Choose the city in which you live.

Click on the tab that reads “Daily.”

1. Prepare a spreadsheet with three columns: Date, High Temperature, and Low Temperature. List

the past 60 days for which data is available.

2. Prepare a histogram for the data on high temperatures and comment on the shape of the

distribution as observed from these graphs.

3. Calculate and S.

4. What percentage of the high temperatures are within the interval – S to + S?

5. What percentage of the high temperatures are within the interval – 2S to + 2S?

6. How do these percentages compare to the corresponding percentages for a normal distribution

(68.26% and 95.44%, respectively)?

7. Repeat Parts 2 to 6 for the minimum temperatures on your spreadsheet.

8. Would you conclude that the two distributions are normally distributed? Why or why not?

Explanation / Answer

Daily normals Homer - Alaska - january Day High (°F) Low (°F) High (°F) Low (°F) 25-Dec 32.4 20.4 min 30.4 18.5 26-Dec 32.3 20.2 max 33.6 20.4 27-Dec 32.2 20.1 Mean 31.51 19.21 28-Dec 32.1 20 SD 0.92 0.60 29-Dec 32 19.9 Mean-SD 30.58 18.61 30-Dec 31.9 19.8 Mean+SD 32.43 19.81 31-Dec 31.7 19.7 Percent between Mean-SD and Mean+SD 85.00% 80.00% 1-Jan 31.6 19.6 Mean-2SD 29.66 18.02 2-Jan 31.5 19.5 Mean+2SD 33.36 20.41 3-Jan 31.4 19.4 4-Jan 31.3 19.3 5-Jan 31.2 19.2 6-Jan 31.1 19.1 7-Jan 31 19.1 8-Jan 30.9 19 9-Jan 30.9 18.9 10-Jan 30.8 18.8 11-Jan 30.7 18.8 12-Jan 30.7 18.7 13-Jan 30.6 18.7 14-Jan 30.6 18.6 15-Jan 30.5 18.6 16-Jan 30.5 18.6 17-Jan 30.5 18.5 18-Jan 30.4 18.5 High Frequency 19-Jan 30.4 18.5 30.5 10 20-Jan 30.4 18.5 31 15 21-Jan 30.5 18.5 31.5 10 22-Jan 30.5 18.5 32 8 23-Jan 30.5 18.5 32.5 8 24-Jan 30.5 18.5 33 4 25-Jan 30.6 18.6 33.5 4 26-Jan 30.6 18.6 34 1 27-Jan 30.7 18.6 More 0 28-Jan 30.8 18.6 29-Jan 30.9 18.7 30-Jan 30.9 18.7 31-Jan 31 18.8 Low Frequency 1-Feb 31.1 18.8 18.6 15 2-Feb 31.2 18.9 18.8 8 3-Feb 31.3 18.9 19 5 4-Feb 31.4 19 19.2 6 5-Feb 31.5 19.1 19.4 5 6-Feb 31.7 19.1 19.6 5 7-Feb 31.8 19.2 19.8 4 8-Feb 31.9 19.3 20 5 9-Feb 32 19.3 20.2 4 10-Feb 32.1 19.4 20.4 3 11-Feb 32.3 19.5 More 0 12-Feb 32.4 19.6 13-Feb 32.5 19.6 14-Feb 32.6 19.7 15-Feb 32.8 19.8 16-Feb 32.9 19.9 17-Feb 33 20 18-Feb 33.1 20 19-Feb 33.3 20.1 20-Feb 33.4 20.2 21-Feb 33.5 20.3 22-Feb 33.6 20.4

Related Questions

Navigate

• Browse (All)
• Browse S
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.