Chapter 4 Homework Worksheet 1. The following table lists the rounded grades in senior seminar for students graduating in 2019, with a social science degree from a small Liberal Arts College. Imagine that the grades were labeled 4 for an A, 3 for a B, 2 for a C, 1 for a D and 0 for an F. Find the range and interquartile range. Student Grade 1 3 2 3 3 3 4 4 5 2 6 4 7 3 8 2 9 1 10 0 11. 2
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.
|
Student |
Grade |
|
1 |
3 |
|
2 |
3 |
|
3 |
3 |
|
4 |
4 |
|
5 |
2 |
|
6 |
4 |
|
7 |
3 |
|
8 |
2 |
|
9 |
1 |
|
10 |
0 |
|
11. |
2 |
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