Check out this online database of datasets and their associated R packages! Note that each of these files comes with some documentation so that we actually know what the data represents. This is really important!

Search for the dataset "Griliches". Open up the associated documentation file. Install and load the associated package is "Ecdat" into R. The commands to do so are given below.

Answer the following questions about the data set.

1. What in general does the data set "Griliches" tell us about. (One sentence)
2. What is the mean and standard deviation for the variable "iq"?
3. How is the sample mean of "iq" approximately distributed?
4. do a plot with "iq" and "lw". Copy and paste it in your excel file. What did you learn? (One sentence)

R function of Use: install.packages(), library(), mean(), var(), plot() Package required: "Ecdat"