Consider the following steam and leaf plots drawn for Population-1 and Population-2. Which of the following are true statements? I. The distributions have the same mean. II. The distributions have the same range. III. The distributions have the same standard deviation. Population-1 Steam Leaf Population-2 Steam Leaf 0 348 1 01256 1 2 29 2 348 3 2557 3 01256 4 4| 29 5 6 5 2557 6 1458 6. 7 09 7 6 8 8 1458 9 09
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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