The mean for your data set is 13. The standard deviation is 2.5. What is the z-score for 10? Note 1: If necessary, round your answer to 3 decimal places
Z-score is given by the formula: z=(x-μ)/σ where: μ-mean σ-standard deviation thus the z-score for the data set with mean 13 and standard deviation of 2.5 will be: z=(10-13)/2.5 z=-1.2
