a variable
An interval is a mathematical expression of betweenness of two or more numbers! You should know this already!
An interval is a subset of an order-numbered set; the interval includes a highest- numbered member of the subset and a lowest-numbered member of the subset and all members of the set with order...
How much is between two numbers.
write an interval and a scale for the data set 55,30,78,98,7, and 45