Question

find the range of following data 70,68,49,12,15,20,50

Answer 1

Formula : Range = Highest observation - lowest observation

                             = Maximum value - minimum value

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In the question,

Observations : 70,68,49,12,15,20,50

Highest observation from the given observations = 70

Lowest observation from the given observations = 12

∴ Range of the following data = 70 - 12

Range of the following data is 58

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Answer 2

First take the upper limit and the lower limit from the above data i.e. 70 & 12 respectively.

and then subtract the lower limit from the upper
70-12=58
therefore 58 is the rang of the data