Exploring Data

define individuals 

• Individuals – objects (people, animals, things) described by a set of data
• tells us what values a variable takes and how often it takes those values
• any characteristic 
• people you point out in converstaion

define distribution

• objects (people, animals, things) described by a set of data
• tells us what values a variable takes and how often it takes those values 
• places an individual into one of several groups or categories.
• takes numerical values for which it makes sense to find an average.

define variable

• objects (people, animals, things) described by a set of data
• takes numerical values for which it makes sense to find an average.
• any characteristic of an individual
• tells us what values a variable takes and how often it takes those values

define categorical variable 

• places an individual into one of several groups or categories.
• tells us what values a variable takes and how often it takes those values
• any characteristic of an individua
• places an individual into one of several groups or categories.

define quantitative variable 

• places an individual into one of several groups or categories.
• takes numerical values for which it makes sense to find an average.
• a number in the problem 
• the answer that you get from the data

what graphs are present from categorical variables ?

• histogram
• dot plots
• Bar and Pie Charts
• stem leafs

what graphs a represented by quantitative variables ?

• pie chart 
• histogram 
• paragraph
• Dot Plots, Histograms, Stem-Leaf, and Box Plots

Define  two way tables 

• describes two categorical variables, organizing counts according to a row variable and a column variable.
• describes one categorical variable 
• describes 4 possible outcomes of a probability
• describes 3 different ways data can be expressed

define conditional distributution

• of a variable describes the values of that variable among individuals who have a specific value of another variable.
• describes the experiment being tested
• washing your hair with conditioner and evenly spreading it around your head 
• giving everyone in the room a hug 

When you describe a distribution’s shape, concentrate on the main features. Look for  rough "blank or clear "Blank"

• shape,size
• color,size
• symmetry,skewness
• edges,windows