For the stem-and-leaf plot below, find the range of the data set. Key: = 2|727 Stem Leaves 1 3 5 2 1 6 6 7 8 9 2 6 7 7 8 8 9 9 9 3 1 1 1 2 3 4 4 5 3 6 6 6 7 8 8 9 4 0 8 61 13 48 35
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.
For the stem-and-leaf plot below, find the
Key:
| Stem | Leaves |
|---|---|
|
1
|
3 5
|
|
2
|
1 6 6 7 8 9
|
|
2
|
6 7 7 8 8 9 9 9
|
|
3
|
1 1 1 2 3 4 4 5
|
|
3
|
6 6 6 7 8 8 9
|
|
4
|
0 8
|
|
|
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