# Frequency Distributions/Tables

3 Questions

QUESTION 1 of 3

Hello Professor,

I have a question on Class Width. When you use the formula to find it and get a whole number like 7, for example, do we have to add a decimal point after like 7.1 or 7.5 or can we round up to 8? Thank you !

QUESTION 2 of 3

in homework from chapter 2, numbers 4 and 5, when i add the relative frequency numbers up they should give me 1.00 but they give me 1.500 even though my numbers are the same as the ones in the answer that the homework gives. is that fine? because the same thing keeps happening when i do the percentages, it does not add up to 100% but instead it adds up to like 105%. i am very confused if that is fine or if it MUST come out to 1.00 and 100%.

QUESTION 3 of 3

When you are calculating the class width. How do you decide when to round to 2 or more decimal places? This question comes from Chapter 2 homework question 12. Thanks for your time.