Statistics questions!

1) A data set on money spent on lottery tickets during the past year by 200 households has a lowest
value of $1 and a highest value of $1167. Suppose we want to group these data into six classes of equal
widths.
a. Assuming that we take the lower limit of the first class as $1 and the width of each class equal
to $200, write the class limits for all six classes.
b. What are the class boundaries and class midpoints?

Can someone show a step by step process on how to go about answering these problems?? I am getting stuck. Please and thank you.

Question

Statistics questions!

1) A data set on money spent on lottery tickets during the past year by 200 households has a lowest 
value of $1 and a highest value of $1167. Suppose we want to group these data into six classes of equal 
widths. 
a. Assuming that we take the lower limit of the first class as $1 and the width of each class equal 
to $200, write the class limits for all six classes. 
b. What are the class boundaries and class midpoints?

Can someone show a step by step process on how to go about answering these problems?? I am getting stuck. Please and thank you.

amistre64 · Answer

what is your definition of a class?

amistre64 · Answer

first step to me is to write down the classes, starting at 1 and partitioning them (moving by) 200

1
200
400
600
etc ...

these form the left side boundaries of each class, fill in the right sides ... usually 1 less then the value of the NEXT class

    1 - 199
200 - 399
400 - 599
600 - 799
   etc ...

now that the classes are bounded left and right, what is the middle value of each class?  the average of the endpoints ...