Data on GBV (number of incidents), and unemployment have been gathered for 10 provinces of SA as shown in the table below. Number of Incidents Unemployment 1 9 2 10 3 7 4 8 5 6 6 9 7 10 8 7
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.
Given the data below:
Data on GBV (number of incidents), and unemployment have been gathered for 10 provinces of SA as shown in the table below.
Number of Incidents Unemployment
1 9
2 10
3 7
4 8
5 6
6 9
7 10
8 7
9 8
10 6
Take GBV as the dependent variable,
a. Compute the
b. What level of GBV would be expected in a province in which the unemployment rate was 30 percent of the population?
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