Calculate the standard score of the given X value, X=21.3
, where μ=12.6
and σ=12.2
. Round your answer to two decimal places.
Z = (X - μ) / σ
Z = (21.3 - 12.6) / 12.2
Z = 0.7131
Therefore, the standard score of X=21.3 is approximately 0.71.