# Segment statistics-- cannot get the mean and standard deviation

**URL:** <https://discourse.slicer.org/t/segment-statistics-cannot-get-the-mean-and-standard-deviation/5723>\
**Category:** Support\
**Created:** [February 11, 2019, 7:56am UTC](https://discourse.slicer.org/t/segment-statistics-cannot-get-the-mean-and-standard-deviation/5723 "2019-02-11T07:56:07Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![TingtingYu](https://avatars.discourse-cdn.com/v4/letter/t/b38774/32.png) [@TingtingYu](https://discourse.slicer.org/u/TingtingYu)\
**Post date:** [February 11, 2019, 7:56am UTC](https://discourse.slicer.org/t/segment-statistics-cannot-get-the-mean-and-standard-deviation/5723/1 "2019-02-11T07:56:07Z")

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Hi,

I used **segment statistics** to calculate the mean and standard deviation. However, I only get the **Surface area and Volume** , would you mind letting me what is going on? Why I cannot get other measurement values, such as mean, standard deviation, etc.

Best,  
Tingting

 ![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/d/c/dcb74de76fad36c4b44842a0ce9d3a4576c8f983.png)

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**Author:** ![cpinter](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/cpinter/32/7995_2.png) [@cpinter](https://discourse.slicer.org/u/cpinter)\
**Post date:** [February 11, 2019, 3:10pm UTC](https://discourse.slicer.org/t/segment-statistics-cannot-get-the-mean-and-standard-deviation/5723/2 "2019-02-11T15:10:16Z")

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Probably your segmentation does not have labelmap representation. Go to Segmentations module, and in the Representations panel click Create for Binary labelmap. Then try to run Segment Statistics again.

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**Author:** ![TingtingYu](https://avatars.discourse-cdn.com/v4/letter/t/b38774/32.png) [@TingtingYu](https://discourse.slicer.org/u/TingtingYu)\
**Post date:** [February 12, 2019, 3:05am UTC](https://discourse.slicer.org/t/segment-statistics-cannot-get-the-mean-and-standard-deviation/5723/3 "2019-02-12T03:05:46Z")

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Hi Csaba,

Thank you. you method is helpful, I can get the other measurement values now.

Best,  
Tingting