The file VeggieBurger contains data on the calories and total fat (in grams per serving) for a sample of 12 veggie burgers.
a. Construct a scatter plot with calories on the X axis and total fat on the Y axis.
b. What conclusions can you reach about the relationship between the calories and total fat in the veggie burgers?
| VeggieBurger |
| Calories |
Fat |
| 110 |
3.5 |
| 110 |
4.5 |
| 90 |
3.0 |
| 90 |
2.5 |
| 120 |
6.0 |
| 130 |
6.0 |
| 120 |
3.0 |
| 100 |
3.5 |
| 140 |
5.0 |
| 70 |
0.5 |
| 100 |
1.5 |
| 120 |
1.5 |
Is there a difference in the variation of the yields of different types of investments? The file CDRate contains the yields for a one-year certificate of deposit (CD) and a five-year certificate of deposit (CD) and a five-year certificate of deposit (CD) for 23 banks in the US, as of April 4, 2011.
a. For one-year and five year CDs, separately compute the variance, standard deviation, range and coefficient of variation.
b. Based on the results of (a), do one-year or five-year CDs have more variation in the yields offered? Explain.
| Bank |
One-Year |
Five-Year |
| AIG |
1.15 |
2.20 |
| Ally |
1.24 |
2.40 |
| American |
0.85 |
2.35 |
| Astoria Federal |
0.75 |
2.65 |
| Bank of Internet USA |
1.21 |
2.49 |
| Centennial |
0.60 |
2.12 |
| Colorado federal |
1.25 |
2.30 |
| Discover |
1.20 |
2.30 |
| First Internet Bank of Indiana |
1.00 |
2.40 |
| Goldwater |
1.24 |
2.39 |
| Intervest National |
1.20 |
2.39 |
| Lone Star |
0.80 |
2.38 |
| MetLife |
1.25 |
1.90 |
| Nationwide |
1.20 |
2.55 |
| newDominion |
1.16 |
2.00 |
| Nova |
0.90 |
2.25 |
| OneWest |
1.20 |
2.55 |
| Salem Five |
0.60 |
2.00 |
| State farm |
0.80 |
2.43 |
| National Republic Bank of Chicago |
1.26 |
2.27 |
| Transportation Alliance |
1.20 |
2.28 |
| USAA |
0.91 |
2.25 |
| VirtualBank |
1.11 |
2.22 |