Question

the mean and population?

Answer 1

Calculate the mean and the population standard deviation for the data set, rounded to thousandths.

{2, 3, 5, 0, 3, 2, 1, 1, 5, 7, 8, 5, 3}

Answer 2

@kirbykirby can you help me?

Answer 3

@hartnn

Answer 4

mean=\[\]=\[\mu=\frac{2+3+5+0+3+2+1+1+5+7+8+5+3}{number of elements=13}\]

then SD


sd =\[\sqrt{var} \] = \[\sqrt{(each number - mean|^2} \] =\[\sqrt{\frac{{(|2-\mu|^2+|3-\mu|^2+|5-\mu|^2+|0-\mu|^2+|3-\mu|^2+|2-\mu|^2+|1-\mu|^2+|1-\mu|^2+|5-\mu|^2+|7-\mu|^2+|8-\mu|^2+|5-\mu|^2+|3-\mu|^2)}}{((13-1)}}\](7-\mu)^2+abs(8-\mu)^2+abs(5-\mu)^2+abs(3-\mu)^2)}}{(13-1)}}\]

Answer 5

still confused

Answer 6

http://www.mathsisfun.com/data/standard-deviation.html