## Week 1 Assignment

Question 1

Forbes has published this information on the ten wealthiest Americans.

1. Which elements can you find in the data above?
2. What are the variables in this data collection?
3. What is the number of observations in this data collection?
4. What variables can be categorical or quantitative?

Question 2

Below is a sample of 10 employees from a company.

20 30 40 30 50
30 20 30 20 40

• You can create a dotsplot using any method you choose to display the data.

Question 3

Below are the prices of PAO, Inc. stocks over the past eight months.

1. Create a scatter diagram. Draw a trend line between the points.
2. Is there a relationship between stock prices and time? Positive, negative, or not at all?

## Project Week 1

You will reference data from the ROI Excel Spreadsheet to complete these assignments. Get it here.

In this data set – the ROI data set – for 2 different majors (Business and Engineering), you are given a sample of the 20 best colleges according to ROI (ROI = Return on Investment) and their ‘School Type’, ‘Cost’, ’30-Year ROI’, and ‘Annual % ROI’.

1. For each of the 2 majors create a pie chart using the column ‘School Type’.  Please comment on the results.
2. For each of the 2 majors create a frequency distribution and histogram using the column ‘Annual % ROI’.  Start at 6% (0.06), and end at 11% (0.11). Then go to 0.5% (0.005).