The accompanying data represent the approximate population, in millions, of the 20 most populous cities in the world. | 13.8 12.9 10.2| 8.5 7.7 O 13.8 11.2 9.9 8.4 7.7 13.5 11.1 9.1 8.4 7.5 |13.5 11.1 8.6 7.8 7.3 Use these data to construct a frequency distribution with a first class of 7.0 -7.9. Fill in the missing classes and the frequency for each class below. Population (millions of people) Number of Cities 7.0 - 7.9 10.0 – 10.9 11.0 – 11.9 20
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.
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