1. If the end bucket has more responses than the next bucket, you're probably cutting it off too soon. In this case, on the low end, the "15 or less" bucket currently has 17 points, the "15-30" bucket has 57, so that's OK. On the high end, "121-150" has 86 points, "150+" has 130, making it the 3rd largest bucket. Normally, you want the highest and lowest buckets to hold only the outliers, and not a significant fraction of the responses.
Another way to look at it is that the median currently lies in the "71-90" bucket, so there are 4 buckets below the median, but only 3 above.
For that matter, the buckets should probably have all been the same width. The lower buckets are 15 to 20 dollars wide. The higher buckets are 30 dollars wide, and as a result contain more responses.
Of course, it's hard to know how the buckets should be distributed until you have some data!
Incidentally, buckets should be non-overlapping, so "15 or less" should have been "less than 15", and "150+" should have been "151+".
1. If the end bucket has more responses than the next bucket, you're probably cutting it off too soon. In this case, on the low end, the "15 or less" bucket currently has 17 points, the "15-30" bucket has 57, so that's OK. On the high end, "121-150" has 86 points, "150+" has 130, making it the 3rd largest bucket. Normally, you want the highest and lowest buckets to hold only the outliers, and not a significant fraction of the responses.
Another way to look at it is that the median currently lies in the "71-90" bucket, so there are 4 buckets below the median, but only 3 above.
For that matter, the buckets should probably have all been the same width. The lower buckets are 15 to 20 dollars wide. The higher buckets are 30 dollars wide, and as a result contain more responses.
Of course, it's hard to know how the buckets should be distributed until you have some data!
Incidentally, buckets should be non-overlapping, so "15 or less" should have been "less than 15", and "150+" should have been "151+".