KEAM 2023 Math Solved Paper

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Question : 42 of 120

Marks: +1, -0

For four observations x1,x2,x3,x4, it is given that

4

∑

i=1

xi2=656 and

4

∑

i=1

xi=32. Then, the variance of these four observations is

144
730
120
248
182.5

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