Turning info into knowledge - Numerical data

Some define Statistics as the field that focuses on turning information into knowledge. The first step in that process is to summarize and describe the raw information - the data.

The BRFSS questionnaire is a massive trove of information. A good first step in any analysis is to distill all of that information into a few summary statistics and graphics. Let's start with a numerical summary.

You can use functions mean, var and median to calculate the (surprise, surprise) mean, variance and median of certain variables of your data frame.

The function summary() returns a numerical summary: minimum, first quartile, median, mean, third quartile, and maximum.

Calculate the mean, var and median of the weight variable of your data frame. (Just print it, no need to assign objects.)
Use the summary() function to see some numerical facts about the weight variable of your data frame. (Again just print it.)

Exercise

Turning info into knowledge - Numerical data

Instructions