QNT 351 WEEK 2 Probability Worksheet

**Search** the Internet for U.S. climate data.

**Choose** the city in which you live.

**Click** on the tab that reads “Daily.”

- Prepare a spreadsheet with three columns: Date High Temperature and Low Temperature. List the past 60 days for which data is available.

- Prepare a histogram for the data on high temperatures and comment on the shape of the distribution as observed from these graphs.

- Calculate and S.

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

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

- How do these percentages compare to the corresponding percentages for a normal distribution (68.26% and 95.44%, respectively)?

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

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

## QNT 351 WEEK 2 Probability Worksheet

### QNT 351 WEEK 2 Probability Worksheet

# QNT 351 WEEK 2 Probability Worksheet

QNT 351 WEEK 2 Probability Worksheet

**Search** the Internet for U.S. climate data.

**Choose** the city in which you live.

**Click** on the tab that reads “Daily.”

- Prepare a spreadsheet with three columns: Date High Temperature and Low Temperature. List the past 60 days for which data is available.

- Prepare a histogram for the data on high temperatures and comment on the shape of the distribution as observed from these graphs.

- Calculate and S.

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

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

- How do these percentages compare to the corresponding percentages for a normal distribution (68.26% and 95.44%, respectively)?

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

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