Question

For a normal model,what standardized scores for data do you think would make a datum value an outlier?
justify your response

Answer 1

For a normal model, standardized scores for data is given by

Z-scores can quantify the unusualness of an observation when your data follow the normal distribution. Z-scores are the number of standard deviations above and below the mean that each value falls. To calculate the Z-score for an observation, take the raw measurement, subtract the mean, and divide by the standard deviation.

Yes, by using standardized scores or z-scores we can find the outliers easily, by seeing the values of z-score. if the values are too much deviate from the other values of z-score then we conclude that they are an outlier.