Mass (kg) Frequency, f Cumulative Midpoint, m fm fm2 Frequency 8.00 < 10.00 10.00 < 12.00 | 12.00 < 14.00 14.00 < 16.00 30 9.00 11.00 27 88 195 60 243 968 2535 900 15 26 A 30 15.00 11. The missing values A, B and C, respectively, are: A 4; 10 and 13.00 B 5; 11 and 13.00 C 4:10 and 14.00 D 4; 11 and 13.00 12. The estimated mean is:
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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