how to get the standard deviation

Question

find the standard deviation of 14, 7,23,56,16,12,18,38,14,60,33,25,11,5,69,7,7,3,10,7,3,10,15,31

Answer 1

Marks: 0/25

Use the information below to calculate the standard deviation (sigma) for the ages of nurses shown in the distribution. Round your answer to the nearest hundredth.

 

Answer 2

construct a 90% t-interval for the mean number of rolls required before a 1 is observed

Answer 3

standard deviation and variance of data

Answer 4

Formula= standard deviation =  square root of the sum of( x-average) all squared divided by the number of observations.

Square root (-13+2+36+-4+-8+-2+18+-6+40+13+5+-9+-15+49+-13+-13+-17+-10+-13+-17+-10+-5+11)squared

square root(19)squared divided by 23

= 3.961773867~3.96(3 s.f.)

Answer 5

M1 = 7.30

M2 = 3.50

 

(7.30 - 3.50)

d = ?

How do I determine the S DV and then Cohen's d

d= ?

Answer 6

find the mean, variance, and standard deviation of the binomial distribution with the given values n=121, p=0.78

Answer 7

1) Find the mean value of the numbers  [EX] (5+3+4)/3=4

2)  (5-4)^2= 1     ,,,,,     (3-4)^2=1     ,,,,,       (4-4)^2=0

3) Find the mean of the output o(2)      (1+1+0)/3= 2/3

4) Standard Diviation = [(1+1+0)/(2/3)]^(-0.5)

Answer 8

18, 33, 26, 4, 34, 28, 33, 32, 46, 18,

18, 12, 13, 22, 4, 16, 29, 13, 23, 17,

47, 44, 21, 18, 17, 14, 23, 28, 17, 31

Answer 9

the Arithmatic mean is: 20.58

the Variance is: 342.58

standard deviation is the square root of varience

standard deviation is : 18.51