Changes

'''Standard error''' is a number used when creating [[Confidence interval|confidence intervals]]. Standard error is calculated by finding the Z* or T* of the desired interval, then multiplying that Z* or T* by the standard deviation of the sample divided by the square root of sample size ''n''.

'''Standard error''' is a number used when creating [[Confidence interval|confidence intervals]]. Standard error is calculated by dividing the standard deviation of the sample divided by the square root of sample size ''n''.

==Example==

==Example==

Calculation:

Calculation:

μ +- '''T*(σ/sqrt(n))'''

μ +- T*'''(σ/sqrt(n))'''

48 +- '''2(14/sqrt(61))'''

48 +- 2'''(14/sqrt(61))'''

48 +- '''2(14/7.8102)'''

48 +- 2'''(14/7.8102)'''

48 +- '''3.58503''' = (44.414, 51.58)

48 +- 3.58503 = (44.414, 51.58)

[[Category:Probability and Statistics]]

[[Category:Probability and Statistics]]