X f cf c% 15-19 3 50 100 10-14 6 47 94 5-9 8 41 82 0-4 18 33 66 How can I find X = 18?
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.
X | f | cf | c% |
15-19 | 3 | 50 | 100 |
10-14 | 6 | 47 | 94 |
5-9 | 8 | 41 | 82 |
0-4 | 18 | 33 | 66 |
How can I find X = 18?
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