(a) Discuss whether or not each of the following activities is a data mining task.
(i) Dividing students according to their performance.
(ii) Predicting the future house price in your area using historical
records.
(b) Assume that the following samples are in normal distribution:
6, 7, 5, 11, 22, 8, 9, 15, 10, 14
The mean and the standard deviation of the dataset are 10.5 and
4.65, respectively.
Calculate the z-score for each sample and identify possible outliers
in the dataset with 95% confidence. Show your working.