Statistics Part 1

Section: Mathematics
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Question : 64 of 100
 
Marks: +1, -0
A student scores the following marks in five tests : 45, 54, 41, 57, 43. His score is not known for the sixth test. If the mean score is 48 in the six tests, then the standard deviation of the marks in six tests is :
[8 Apr 2019 Shift 2]
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