Question 332585
the heights (in inches) of 30 adult males are listed below. Construct a frequency distribution using five classes. 
 write the word or phrase that best completes the statement.
<pre><b>
70 72 71 70 69 73 69 68 70 71 
67 71 70 74 69 68 71 71 71 72 
69 71 68 67 73 74 70 71 69 68

The smallest value is 67 and the largest value is 74.

Subtract them:

74 - 67 = 7

Divide by 5, the number of classes:

 <u> 1.5</u>
5)7
  <u>5</u>
  26
  <u>25</u>
   1

Round up to 2, the width of the class.

Subtract .5 from smallest value as the beginning
of the smallest class, get 66.5, draw a line,
add 2, getting 68.5 write that down on the right 
of the line: 

66.5---68.1

Begin the next line with the value on the right,
draw a line, add 2, getting 70.1.  Write that
down on the right of the line. So now you have:

66.5---68.1
68.1---70.1

Continue until you have this:


66.5---68.5   
68.5---70.5   
70.5---72.5  
72.5---74.5   
74.5---76.5   

Label that column CLASS and beside it
label another column FREQUENCY, and in that
column list how many you count that are in 
each class:

  CLASS      FREQUENCY
66.5---68.5      6
68.5---70.5     10 
70.5---72.5     10
72.5---74.5      4
74.5---76.5      0

Edwin</pre>