Question
Marks obtained by students out of 20 in a class test are written on the board. What is the range of the marks?
12 ,14 , (-1), (-6), 15, 0, 8, 2. [2 MARKS]
Answer: Option A
:
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Formula: 1 Mark
Result: 1 Mark
Range is defined as the difference between the highest and the lowest observation.
Here, after arranging marks in ascending order : ( -6 ),( -1 ) , 0 , 2, 8 , 12 , 14 , 15.
Lowest observation: (-6)
Highest observation: 15
Range = Highest observation - Lowest observation
Range = 15 - (-6) = 21
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