# Data types vs Mathematical operations

#### Tahirawan77

##### Starting to get Involved
Hi,

I have prepared a slide to show the various data types and the allowed mathematical operations on each of them for a training session. can you pls. review the slide and tell me if the info. is correct?

thanks

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#### Miner

##### Forum Moderator
Interval data cannot be multiplied or divided. Only ratio data can do that.

By discrete, did you mean integer data? Discrete tends to be used in many different ways, so I recommend that you define your usage of discrete.

#### Bev D

##### Heretical Statistician
Super Moderator
I would also add that you can determine differences between variables for all of the data types listed.
The techniques are different of course. For example, you can’t use t-tests or ANOVA if you can’t multiply/divide…

#### Tahirawan77

##### Starting to get Involved
Interval data cannot be multiplied or divided. Only ratio data can do that.

By discrete, did you mean integer data? Discrete tends to be used in many different ways, so I recommend that you define your usage of discrete.
Hi Miner,

Thanks, and yes by Discrete I mean 'count data' only. I have also attached three more slides which i plan to show before i show 'mathematical operations slides'. Theses slides will describes the various data type with examples.

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#### Tahirawan77

##### Starting to get Involved
I would also add that you can determine differences between variables for all of the data types listed.
The techniques are different of course. For example, you can’t use t-tests or ANOVA if you can’t multiply/divide…
Hi Bev,

thanks for your reply but i am not sure if i understood correctly because i thought we could not determine the differences if the data type is Nominal, ordinal or binary. Can you enlighten me on this?

Thanks

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