Question 9. The heights of 16 participants (cm) are shown below: 163, 181, 168, 191, 173, 170, 189, 194, 160, 178, 187, 158, 172, 190, 179, 196 Calculate the following descriptive statistics: a) Mean b) Median c) Variance d) Standard deviation
Inverse Normal Distribution
The method used for finding the corresponding z-critical value in a normal distribution using the known probability is said to be an inverse normal distribution. The inverse normal distribution is a continuous probability distribution with a family of two parameters.
Mean, Median, Mode
It is a descriptive summary of a data set. It can be defined by using some of the measures. The central tendencies do not provide information regarding individual data from the dataset. However, they give a summary of the data set. The central tendency or measure of central tendency is a central or typical value for a probability distribution.
Z-Scores
A z-score is a unit of measurement used in statistics to describe the position of a raw score in terms of its distance from the mean, measured with reference to standard deviation from the mean. Z-scores are useful in statistics because they allow comparison between two scores that belong to different normal distributions.
Question 9. The heights of 16 participants (cm) are shown below:
163, 181, 168, 191, 173, 170, 189, 194, 160, 178, 187, 158, 172, 190, 179, 196 Calculate the following
- a) Mean
- b)
Median - c) Variance
- d) Standard deviation
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