The weights in milligram of 2538 seeds of the long pine is represented by the following frequency distributed data; Weights (milligrams) Number of Seeds 10-24 16 25-39 68 40-54 204 55-69 233 70-84 240 85-99 655 100-114 803 115-129 294 130-144 21 145-159 4 Find the following measurements for the aforementioned frequency distribution a) Arithmetic Mean b) Median c) All quartiles d) 3rd & 7th Deciles e) 24th & 46th Percentile
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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