Mac Applications forum

General discussion

Calibration graphs on Numbers

by JonelleVillar / February 16, 2011 3:18 AM PST

I am new to Numbers and need help to understand the difference I found today between an equation generated in Excel and the one generated in Numbers. I was making a graph to show potentials against the log of an ion concentration. Excel gave it to me right away in the lab, but at home I got an entirely different answer in Numbers.

Any ideas? I would love to stick with one spreadsheet program, preferably mastering iWork.


Post a reply
Discussion is locked
You are posting a reply to: Calibration graphs on Numbers
The posting of advertisements, profanity, or personal attacks is prohibited. Please refer to our CNET Forums policies for details. All submitted content is subject to our Terms of Use.
Track this discussion and email me when there are updates

If you're asking for technical help, please be sure to include all your system info, including operating system, model number, and any other specifics related to the problem. Also please exercise your best judgment when posting in the forums--revealing personal information such as your e-mail address, telephone number, and address is not recommended.

You are reporting the following post: Calibration graphs on Numbers
This post has been flagged and will be reviewed by our staff. Thank you for helping us maintain CNET's great community.
Sorry, there was a problem flagging this post. Please try again now or at a later time.
If you believe this post is offensive or violates the CNET Forums' Usage policies, you can report it below (this will not automatically remove the post). Once reported, our moderators will be notified and the post will be reviewed.
Collapse -
WIthout seeing the equation.
by R. Proffitt Forum moderator / February 17, 2011 3:42 AM PST

It would be hard to guess why the result changed.

Collapse -
Calibration graphs on Numbers
by JonelleVillar / February 17, 2011 5:57 AM PST

Hi R. I had two short columns of values x axis is the log of solution concentration, and y axis is the potentials from the ion selective electrodes (I was measuring fluoride content).
0.70 0.190
1.00 0.175
1.40 0.153
1.70 0.137

When I put this values in the graph for Excel, I got the equation : Y= -0.0533x + 0.2277
When I came home and put the same values into Numbers, I got - well I just rechecked and got the same value. I must have chosen the wrong type of chart. New days bring new solutions.

Anyway R, if you have words of encouragement as to why I should use Numbers over Excel, I am open to hear what you have to say.

Thanks for responding.

Collapse -
Just one and then it's not a great one.
by R. Proffitt Forum moderator / February 17, 2011 6:21 AM PST

Because Microsoft Excel uses the same files and code under the hood.

Then again you could try Open Office which mimics Excel in other ways and is free.

Popular Forums
Computer Help 49,613 discussions
Computer Newbies 10,349 discussions
Laptops 19,436 discussions
Security 30,426 discussions
TVs & Home Theaters 20,308 discussions
Windows 10 360 discussions
Phones 15,802 discussions
Windows 7 7,351 discussions
Networking & Wireless 14,641 discussions


$16,000 used SUVs

Whether you like your SUVs cute or capable, or some blend of the two, we've got a wide variety of choices in Roadshow's first collection of Editors' Used Picks.