A sample of students score on History (a total of 100 points) are show in the following stem plot. 5 3 6 9 7 5579 8 2346678 9 11235 How many values are going to be considered outliers? Why? Create a boxplot for these data. Describe the distribution of the students’ score (use five-number summary to descript the shape, center and spread)
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.
- A sample of students score on History (a total of 100 points) are show in the following stem plot.
|
5 |
3 |
|
6 |
9 |
|
7 |
5579 |
|
8 |
2346678 |
|
9 |
11235 |
- How many values are going to be considered outliers? Why?
- Create a boxplot for these data.
- Describe the distribution of the students’ score (use five-number summary to descript the shape, center and spread)
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