If 0 is the smallest value in your data, then yes use zero to find the range.
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steam and leaf plots are used to get the range, median, and mode of a group of numbers.
To find range in a number set, subtract the smallest number from the largest. This is used to determine the size of the range and how close the numbers are to one another.
Prime numbers are used to find the LCM of numbers Prime numbers are used to find the HCF of numbers Prime numbers are used to simplify fractions Prime numbers are used to find the LCD of fractions
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The answer is 2.5In order to find out the median of a group of numbers you must count how many of numbers there are, add one, divide by two to find n, and the nth number in the group is the median.In this case, there are 8 numbers. 8 + 1 = 9. 9/2 is 4.5So the 4.5th number in the group is the median.Since you can't have a 4.5th number, you take the average of the 4th and 5th numbers; in this case, 2 and 3. 2+3=5, 5/2 = 2.5The median can be used to get an idea of the way a group of data is spread out. It is less influenced by outliers than the mean so it is more commonly used.