Given two histogram, one depicts the steady percentage of computer usage from 2002 to 2010 and the other compares the qualification details of percentage population in 2002 and 2010.
Both histogram graph shows the positive correlation between more number of people getting education and increase in sales of Electronic devices like personal computers. Percentage students who are graduating high school, college, and higher studies in 2010 are much higher as compared to percentage students having same degrees in 2002. Difference between students who dropout from college, have a bachelor's and postgraduate degree is not much in 2010 as compare to 2002.
The difference between percentage of students getting graduation and postgraduation degrees in 2002 and 2010 is less. So we can could conclude that percentage of people getting postgraduation degrees doesn't contributes much in increasing revenue of Businesses who sells computers.
Also in second histogram graph straight upward trend can be seen in the percentage of population who has not completed high school, completed high school, dropped out college and poses postgraduation degree in 2002. In case of 2010 there is an flattish increase in percentage of people who could not complete college, completed college and possess postgraduation degree. Steady difference can be observed between percentage of people who haven't completed college, high school and possess high school diploma in 2002 and 2010. 
 Given
 two histogram, one depicts the steady  
percentage
 of computer usage from 2002 to 2010 and the other compares the qualification  
details
 of  
percentage
 population in 2002 and 2010.
Both  
histogram
 graph  
shows
 the  
positive
 correlation between more number of  
people
 getting education and increase in sales of Electronic devices like personal computers.  
Percentage
  students
  who
 are  
graduating
  high
  school
, college, and higher studies in 2010 are much higher  
as
 compared to  
percentage
  students
 having same  
degrees
 in 2002. Difference between  
students
  who dropout
 from college, have a bachelor's and postgraduate  
degree
 is not much in 2010 as compare to 2002.
The difference between  
percentage
 of  
students
 getting graduation and  
postgraduation
  degrees
 in 2002 and 2010 is less.  
So
 we can  
could
 conclude that  
percentage
 of  
people
 getting  
postgraduation
  degrees
 doesn't  
contributes
 much in increasing revenue of Businesses  
who
 sells computers. 
Also
 in second histogram graph straight upward trend can be  
seen
 in the  
percentage
 of population  
who
 has not  
completed
  high
  school
,  
completed
  high
  school
, dropped out college and poses  
postgraduation
  degree
 in 2002. In case of 2010 there is  
an
 flattish increase in  
percentage
 of  
people
  who
 could not complete college,  
completed
 college and possess  
postgraduation
  degree
. Steady difference can  
be observed
 between  
percentage
 of  
people
  who
 haven't  
completed
 college,  
high
  school
 and possess  
high
  school
 diploma in 2002 and 2010.