Statistics: Making sense of Data : Box plot 2

Through the previous lecture,we've learn a simplified box plow. Today, We're gonna get throught it in detail and after then, we would get the way to represent any dataset more precisely. Some concepts in statistics give you more easy way to get used to it.

1. IQR (Interquatile range)
   : It represents the range from the first quatile (25% of dataset from minimum) over to the third quatile (75% of dataset).
  : 3rd Q - 1st Q

2. Lower innerfence / Upper innerfence
  : To remove the outlier to make the figure precisely
  : L.I = 1st Q- 1.5*IQR
  : U.I= 3rd Q+1.5*IQR

3. Mean
 : It means an average value of dataset.
 : After adding up all together from X subscript 1 until  X subscrip n,which means the number of data set and devide by the n
: Total value of data / The number of data