Question

Find the standard deviation for the observations 1, 2, 3, 4, 5.​

Answer 1

Answer:

2

Explanation:

SD = N∑i=1N(xi−x)2

x=MeanandN= Number of scores 

Mean = x=N∑xi

  = 51+2+3+4+5

  = 3 

SD =  5(1−3)2+(2−3)2+(3−3)2+(4−3)2+(5−3)2  

       =  510 

       =  2