Supplementary Exercise 1.10 of IPS7e
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(a)
Of course it's totally ok to add up the 6 numbers on a calculator, or
using the Windows Calculator.

In Minitab, compute the sum using the Stat-Basic Statistics-Display Descriptive 
Statistics menu, by adding the Sum to the statistics to be calculated and displayed 
(using the Statistics button):

 WOpen "R:\Chapter 1\ex01_010.mtw".
 Describe 'Count';
   Mean;
   StDeviation;
   QOne;
   Median;
   QThree;
   Sums;
   Minimum;
   Maximum;
   N.

Descriptive Statistics: Count 

Variable  N     Mean    StDev       Sum  Minimum      Q1  Median       Q3  Maximum
Count     6  2049833  3284138  12299000   127000  230500  922500  3205500  8682000


You could also use the Calc-Column Statistics menu:

 Sum 'Count'.

Sum of Count 

Sum of Count = 12299000


A (relatively) small round-off errors is seen for the counts, because
the problem states there were 12,298,000 undergraduate students in U.S.
colleges.


(b)
Use the Graph-Bar Chart menu (Values from a table) to produce a bar graph.
Note that the bars can be ordered by size using the Chart options.

 Chart ( 'Count' ) * 'Ethnicity';
   Summarized;
   Bar.

 Chart ( 'Count' ) * 'Ethnicity';
   Summarized;
   Decreasing;
   Bar.


Alternatively, use the Graph-Pie Chart menu (Values from a table) to produce a pie graph. 
Note that category names and percentages can be added using the Labels - Slice labels options.

 PieChart ( 'Count' ) * 'Ethnicity';
   Combine 0.02;
   SLabel;
     PCategory;
     Percent;
   Panel.


Both graphical displays show that students of white ethnic background constituted
by far the largest group of U.S. undergraduate students.