other govt exam IGNOU Junior Assistant Cum Typist (JAT) Mock Test 2023 Quantitative Aptitude Standard Deviation
Calculate the standard deviation of ungrouped data of marks of students which are given below:
85, 65, 55, 42, 69, 83, 92, 77.
1
31.26
2
244.25
3
15.63
4
7.83