USEFULNESS/ IMPORTANCE OF Z SCORES:
- Z score is also known as the standard score is a statistical
tool.
- It helps in finding the probability of the score which occurs
in the normal distribution.
- The comparison between two scores, each from different
distributions can be easily done.
- The scores in the normal distribution are converted/
standardized into the Z scores, thus converting the normal
distribution into standard normal distribution.
- It helps in finding whether the score in the distribution is
equal to mean, below the mean or above the mean.
- The distance of the score from the actual mean can also be
determined using Z scores.