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# Module 3 - Lab
# 6/10/13
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## In this lab you can use the interactive console to explore but please record your commands here.  
# Remember anything you type here can be "sent" to the console with Cmd-Enter (OS-X) or Cntr-Enter (Windows/Linux).

# 1. Load in the `CO2` dataset (which is included like the `iris` dataset

# 2. What class is `CO2`?

# 3. How many observations (rows) and variables (columns) are in the `CO2` dataset?

# 4. How many different "plants" are in the data? (hint: `length` and `unique`)

# 5. How many different "types" are in the data?

# 6. Tabulate "type" and "treatment" - what are the dimensions of the resulting table?
#		hint: you can assign tables to variables

# 7. Create a new `data.frame` named `CO2.even` that contains the even rows of `CO2`
#		hint: subsetting and `seq` (note the `by` argument)

# 8. How many observations are in `CO2.even`?

# 9. What are the sums of the a) concentrations and b) uptake values in the `CO2.even` dataset?
#		And what are their means?