Question

Which two sets of four numbers have the same mean but different standard deviation? 3,2,6,1 and 1,6,2,3

3,2,6,1 and 0,2,3,7

1,2,3,4 and 0,3,0,6

1,1,1,1 and 3,3,3,3

Answer 1

Ans:2)data set

mean same and s.d is different in two data set.

given that,

1)3,1.87

3,1.87

2)3,​​​​​​​1.87

3,​​​​​​​2.55

3)2.5,​​​​​​​1.12

2.25,​​​​​​​2.49

4)1,​​​​​​​0

3,​​​​​​​0