So far, it appears as though you posted this problem, asking for:
1. The number of classes and class width
2. A frequency distribution, and relative frequency
3. The standard deviation
4. The number of classes and class width
Why do you need so much help? It appears you're doing statistics. Why don't you try some of this on your own?
You need to help yourself, and when you run into trouble someone is more likely to help you. Don't depend on
someone to do all your work for you. At least try!!