Use Non-parametric tests to conclude on the following data. Conclude whether there is a significant increase in the performance indices of telemarketers after employing the revitalized telemarketing program.
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.
Use Non-parametric tests to conclude on the following data.
Conclude whether there is a significant increase in the performance indices of telemarketers after employing the revitalized telemarketing program.
Subject |
Before |
After |
1 |
1.500 |
2.550 |
2 |
1.541 |
1.879 |
3 |
1.775 |
1.859 |
4 |
1.710 |
1.800 |
5 |
1.850 |
1.890 |
6 |
1.770 |
1.990 |
7 |
1.890 |
1.995 |
8 |
1.880 |
2.500 |
9 |
1.900 |
2.325 |
10 |
1.925 |
2.275 |
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