Baseline 50 65 42 55 78 31 66 84 23 45 Test 53 64 45 51 80 29 65 86 21 47 Difference -3 1 -3 4 -2 2 1 -2 2 -2 14. What difference do you notice between the variability of the raw scores and the variability of the differences scores?
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.
|
Baseline |
50 |
65 |
42 |
55 |
78 |
31 |
66 |
84 |
23 |
45 |
|
Test |
53 |
64 |
45 |
51 |
80 |
29 |
65 |
86 |
21 |
47 |
|
Difference |
-3 |
1 |
-3 |
4 |
-2 |
2 |
1 |
-2 |
2 |
-2
|
14. What difference do you notice between the variability of the raw scores and the variability of the differences scores?
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