This data is from a sample. Calculate the mean, standard deviation, and coefficient of variation. Suggestion: use technology. Round answers to two decimal places. 47.1 42.2 26.3 39.7 22.1 29 35.5 30.2
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.
| 47.1 | |
| 42.2 | |
| 26.3 | |
| 39.7 | |
| 22.1 | |
| 29 | |
| 35.5 | |
| 30.2 | |
| MEAN | 34.0125 |
| VAR | 73.41839 |
| STDEV | 8.568453 |
| c.v | 0.251921 |
|
25.19207 |
mean = AVERAGE (x)
VAR (x)
stdev = SQRT (VAR(x))
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