I have homework for (BUS-310 -A & B) Introduction to Business Analytics

Variables:

Population: In thousands

Income:

Illiteracy:

Life.Exp: Life expectancy

Murder:

HS.Grad: High school Graduation Rate

Frost:

Area:

state.abb:

state.area:

x: Latitude:

y: longitude:

state.division:

state.name:

state.region:

Honor Code:

Questions:

1. Make a histogram of Population variable using hist function. [4]

2. Color the above histogram yellow, increase number of breaks to 25. [4]

3. In the above histogram, add x label = Population, main = Distribution of State Population. Describe the distribution: Is it symmetric, right skewed, or left skewed? [4]

4. Make a Bar graph to show the distribution of state.region variable. [4]

5. Customize the above bargraph and color the bars red, blue, green, and yellow [4]

6. Scatterplot of Murder (y-axis) vs Frost (x-axis). [4]

7. Customizing the scatterplot in #6, x label = Frost, y label = Murder, main = Murder vs Frost. Is the form (linear or nonlinear), direction (positive or negative), strength (strong or weak)? [5]

8. Scatterplot matrix of Population + Income + Illiteracy + Life.Exp + Murder + HS.Grad + Frost + Area. Life.Exp has negative relationship with which two variables? Illiteracy has positive relationship with which variable? [5]

9. Make boxplots to compare distribution of HS.Grad across state.region. [4]

10. Color the above box plot red, blue, green, and yellow. [4]

11. Add x label as Region, Y label as High School Graduation, and main as High School Graduation across Regions. Which region has the highest median graduation rate? Which region has the lowest median graduation rate? [5]

12. Add varwidth = T in the above boxplots to display difference in number of observations. [3]