Question

standard deviation for mark obtain by a student in monthly test mathematics (OUT OF 50) as 30, 35, 25, 20, 50. find standard deviation?​

Answer 1

Question,

Standard deviation for mark obtained by a student in monthly test mathematics (out of 50) are 3,35,25,20,50.Find standard deviation?

Solution,

Answer is in the attachment above

Formula used,

Standard deviation = √(Mean - x)^2/N

where N = total number of observations