Problema Solution
Given a mean of 571 and a standard deviation of 236.5, what is the z-score of the value 724 rounded to the nearest tenth
Answer provided by our tutors
A z-score can be calculated from the following formula.
z = (x - μ) / σ
where z is the z-score, x is the value of the element, μ is the population mean, and σ is the standard deviation.
x = 724
μ = 571
σ = 236.5
z = (724 - 571)/236.5
z = 0.6 rounded to the nearest tenth