Teaching UP B.Ed (Paper 1 & 2) Mock Test 2025 Mathematics Statistics Variance and Standard Deviation
If the mean of the discrete distribution 8, 9, 6, 5, x, 4, 6, 5 is 6, then its standard deviation (nearest to two decimal places) is
1
2.50
2
1.58
3
0.51
4
1.41