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# Where did I go wrong on this math problem? (question, my answer and correct answer given)

Tue 9 Oct, 2012 11:47 pm
This is the question & correct answer:

This is my answer and how I came to it:

Where did I go wrong?

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markr

1
Wed 10 Oct, 2012 12:07 am
@Anonymous1234567890,
After looking at this presentation:
http://www.wisc-online.com/objects/ViewObject.aspx?ID=QLT1102
I'd say there isn't a single correct answer.
Anonymous1234567890

1
Wed 10 Oct, 2012 12:36 am
@markr,
Ah! I see. I calculated the width wrong.
Anonymous1234567890

1
Wed 10 Oct, 2012 01:13 am
@Anonymous1234567890,
*sigh* something's still wrong.

max-min=
74-67=1.4

class width=1.4

But the professors class width =1.5

Why? If you were to round it to the nearest integer, wouldn't it be 1, if anything? Why round up? I'd understand if it was 1.48, but it's simply 1.4
markr

1
Wed 10 Oct, 2012 01:21 am
@Anonymous1234567890,
You got me. Some of the decisions in the the tutorial were arbitrary. Like I said, I don't think there is a single correct answer.
Anonymous1234567890

1
Wed 10 Oct, 2012 01:23 am
@markr,
Okay. Well, thank you for your help! I really appreciate it! You helped a lot!
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