Replace Stat value with image

I have a stat in a table that is generated by the following:

0"]

The resulting number is a value between 1 and 7. I would like to display one of 7 images in place of the calculated value. I use 4 as my median so 3.5 - 4.5 would display one image, 4.5-5.5 would display a different image, 5.5-6.5 would display a different image and so on. I get how to use conditional logic for a specific field value but wasn't sure how it would work in the case of a calculated value.