statistics

Econ 390-03

Assignment 3

Due date is Sunday, Sep 13th 11:59 PM. Late submissions are not accepted

1. What would be an example of a sample of data which suffers from “selection bias”.

(Please note that as I mentioned in the videos, I will provide the data for next empirical exercises, but in order to get you familiar with the resource I provided on Canvas, I will ask you to download the data and the description yourself. The data is from the website I uploaded >>>> the first tab on the left called: Data for empirical exercises>>>>>then pick the “original edition” >>>>>then find CPS08 data)

2. Download the data “CPS 08”. Read the description as well and answer the questions below:

a. How many variables are in the data?

b. How many observations are in the data?

c. What does “bachelor” refer to? (from the description)

d. What does “ahe” refer to (from the description)

e. What is the unit of ahe?

f. Provide the scatter plot of ahe and age. (in which ahe is on the vertical axis)

g. Do you see any linear dependency in the scatter plot you created for part f? What is the correlation between ahe and age? What does this number mean?

h. Create a histogram for “age”. The bin width is your choice.

3. If then find

4. If then find