My bar graph has 5 distinct levels (1-5). Is there a way to get these values in between the tick marks rather than at the tick marks?

Alternatively, I would like to get rid of the "0" at the bottom of the axis since 0 isn't a possible level for my data. I currently have the axis fixed starting at 0 and ending at 5. If I try to start the axis at 1, any data with a level of 1 doesn't show up since there isn't any area below the first "tick".