Find the measures of center for following. Data Frequency 30 - 34 12 35 - 39 16 40 - 44 10 45 - 49 8 50 - 54 8 55 - 59 3 60 - 64 4 65 - 69 0 70 - 74 2 mode = median = mean = (round to 4 decimal places)
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.
Find the measures of center for following.
| Data | Frequency |
|---|---|
| 30 - 34 | 12 |
| 35 - 39 | 16 |
| 40 - 44 | 10 |
| 45 - 49 | 8 |
| 50 - 54 | 8 |
| 55 - 59 | 3 |
| 60 - 64 | 4 |
| 65 - 69 | 0 |
| 70 - 74 | 2 |
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