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YanivD
YanivD
Level III

Mixing speed factor type

Created: Nov 4, 2022 12:17 AM  |  Last Modified: Jun 8, 2023 2:12 PM (608 views)
Hi,
I am going to make a DOE and one of the factors there is mixing speed. The speeds i would like to check are 2,5 and 7 m/s. Should i choose it as categorical factor or continues (but 5 is not exactly the mid point)
Please advise
Thanks
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Accepted Solutions
Victor_G
Super User Victor_G
Super User
Solution

Re: Mixing speed factor type

Created: Nov 4, 2022 04:09 AM  |  Last Modified: Nov 4, 2022 1:48 AM (598 views)  |  Posted in reply to message from YanivD 11-04-2022

Hi @YanivD,

 

It depends how "easy/practical" it is to change your mixing speed.

  • If the speed mixing can take any value between 2,5 and 7 m/s, then this factor may be set as a continuous factor.
  • If you can change it, but only by "increment", I would recommend to set this factor as a discrete numeric factor and specify the number of levels (and values) you would like to investigate.

 

Hope this will help you,

Victor GUILLER

"It is not unusual for a well-designed experiment to analyze itself" (Box, Hunter and Hunter)

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1 REPLY 1
Victor_G
Super User Victor_G
Super User
Solution

Re: Mixing speed factor type

Created: Nov 4, 2022 04:09 AM  |  Last Modified: Nov 4, 2022 1:48 AM (599 views)  |  Posted in reply to message from YanivD 11-04-2022

Hi @YanivD,

 

It depends how "easy/practical" it is to change your mixing speed.

  • If the speed mixing can take any value between 2,5 and 7 m/s, then this factor may be set as a continuous factor.
  • If you can change it, but only by "increment", I would recommend to set this factor as a discrete numeric factor and specify the number of levels (and values) you would like to investigate.

 

Hope this will help you,

Victor GUILLER

"It is not unusual for a well-designed experiment to analyze itself" (Box, Hunter and Hunter)