From Test-Scratch-Wiki
Finding the Range of Numbers means finding what a list of numbers ranges from. This can be done by subtracting the lowest value in a list of numbers, from the highest value.
Doing it in Scratch
Method 1
For this tutorial you will need the following variables and lists:
Variables:
- Highest #
— Holds the value of the highest number
- Lowest #
— Holds the value of the lowest number
- Iterator
— A counter variable
- Range
— Holds the answer
Lists:
- List of Numbers
— The list in which all the values are kept
Step 1
This step finds the highest value in the list. To do this use this simple script:
set [Iterator v] to [0] set [Highest # v] to [0] repeat (length of [List of Numbers v]) change [Iterator v] by (1) if <(item (Iterator) of [List of Numbers v]) > (Highest #)> then set [Highest # v] to (item (Iterator) of [List of Numbers v]) end end
Step 2
This step finds the lowest value in the list. To do this, all you need is a slight alteration of the above script, by changing the > to a <, and changing the variable.
set [Iterator v] to [0] Set [Lowest # v] to [0] repeat (length of [List of Numbers v]) change [Iterator v] by (1) if <(item (Iterator) of [List of Numbers v]) < (Lowest #)> then set [Lowest # v] to (item (Iterator) of [List of Numbers v]) end end
Step 3
The final step simply subtracts the lowest value from the highest value, and sets the answer variable (Range) to that value.
set [Range v] to ((Highest #) - (Lowest #))
Method 2
In this method, the first step is sorting the list. Then, add this script to the bottom:
set [Range v] to ((item (last v) of [Text v]) - (item (1 v) of [Text v]))
Range will contain the range.
