Finding the class width: there are 8 classes and the lowest value is 61 and the highest is 104. When I subtract 104-61=43 divided by 8 I get 5.3 and round it to 5. The problem is all 8 classes should have an equal range of 6 and I am not getting 6.

Question

amistre64 · Answer

class width is not an exact science tho, its just a means of organizing the data

amistre64 · Answer

if all classes need a range of 6; lets see what we get with this

60-65
66-71
72-77
78-83
84-89
90-95
96-101
102-107

 maybe?

amistre64 · Answer

or if we go your route:

104
-61
----
  43 +1 = 44


44/8 = 11/2 = 5.5

anonymous · Answer

When arriving at 5.3 (after subtracting 61 from 104 and dividing it by the 8 (classes) I have rounded 5.3 to both 4,5, and 6 and still cannot come out with an equal range in all 8 classes.

anonymous · Answer

If its 5.5, the Professor is asking us to round up to the next full number, in this case 6. Will try it...

amistre64 · Answer

by rounding you are not going to get anything exact

amistre64 · Answer

the adding 1 is to account for the low entry that is dropped:

for example:

1 to 10 has 10 elements

10-1 = 9

anonymous · Answer

He has told us that the ranges amongst all the classes must be equal. 
104-61=43 divided by 8= 5.3, rounded to 5 my ranges are:
61-65...4
66-70...4
71-75...4
76-80...4
81-85...4
86-90...4
91-95...4
96-104...10 YIKES!

amistre64 · Answer

Find the class width by dividing the range by the number of classes and rounding up. There are two things to be careful of here. You must round up, not off. Normally 3.2 would round to be 3, but in rounding up, it becomes 4. If the range divided by the number of classes gives an integer value (no remainder), then you can either add one to the number of classes or add one to the class width.  form google stuff

amistre64 · Answer

http://people.richland.edu/james/lecture/m170/ch02-grp.html

anonymous · Answer

thank u so much!

amistre64 · Answer

yw