Example 10 Grouped data: The table Represents the heights, in inches, of a sample of 100 males semiprofessional soccer players. Find relative frequency and cumulative relative frequency for the frequency distribution 59.95- 61.95- 63.95- 65.95- 67.95- 69.95- 71.95- 73.95- Heights (Inches) 61.95 63.95 65.95 67.95 69.95 71.95 73.95 75.95 3 15 40 17 12 7 Frequency
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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